JustBeginning
Beginner's guide

So you're getting guinea pigs

The pet store cage is too small. Guinea pigs need to live in pairs. And 80% of their diet should be hay, not pellets. Once you know these three things, the rest is straightforward. Here's exactly what your first bonded pair needs.

By Colin B. · Published August 6, 2026 · Last reviewed August 6, 2026
a person petting a brown and white guinea pig

Photo by Matthew Halmshaw on Unsplash

The 60-second version

If you only buy 3 things to start:

  1. Kavee C&C Cage 4x2 with Lid — The C&C cage that eliminates the cage-size trap: actual space for a bonded pair, included coroplast, no guesswork.
  2. GuineaDad Premium Fleece Liner (Large) — GuineaDad Fleece Liner: antibacterial, dust-free, washable. Pay for it once and skip the monthly bedding bill.
  3. Oxbow Western Timothy Hay (40 oz) — Oxbow Timothy Hay: fresh, green, leafy, and vet-recommended. The 80% of their diet that most beginners underestimate.
Budget total
$150
Typical total
$350
Budget gets you a C&C cage, fleece liner, hay, pellets, and two hideys. Typical includes the guinea pigs themselves ($30–50 each from a rescue) and a first vet wellness check.

We earn commission on qualifying Amazon purchases — see our affiliate disclosure. Price tiers and budget totals shown above are editorial estimates; actual Amazon prices vary.

At a glance

Our top pick in each category

The fastest path through this guide — each best-starter pick by category. Scroll for the budget and upgrade alternatives.

CategoryTop pickPriceWhere to buy
HousingKaveeKavee C&C Cage 4x2 with Lid$$$ See on Amazon →
BeddingGuineaDadGuineaDad Premium Fleece Liner (Large)$$ See on Amazon →
Hay & PelletsOxbow Animal HealthOxbow Western Timothy Hay (40 oz)$ See on Amazon →
Hideys & EnrichmentSmall Animal SupplyWooden Guinea Pig Hideout with Multiple Windows$ See on Amazon →
Before you buy anything

A few things worth knowing first

Guinea pigs must live in pairs. A single guinea pig is chronically lonely; many develop depression, repetitive behaviors, and shortened lifespans. Some countries require pairs by law. Always adopt two, ideally from a rescue that already knows they're bonded.

The minimum cage size for two guinea pigs is 8 square feet of floor space. Almost every cage sold at pet retail falls short of this; most run 3–4 sq ft. The solution is a C&C cage (coroplast base + grid panels), which gives you 14+ sq ft for roughly the same price as an undersized store cage.

Hay is not a treat or a supplement. It's the majority of their diet; roughly 80%. Guinea pig teeth grow continuously and wear down only through constant hay-chewing. A low-hay diet leads to dental disease that can cost hundreds of dollars to treat. Unlimited timothy hay should always be available.

The gear

What you actually need

Housing

Cage size is where most beginners go wrong, and it's expensive to fix twice. The minimum for two guinea pigs is 8 square feet of floor space, ideally 10–14 sq ft. Almost nothing at a pet store clears this bar. The solution is a C&C cage: modular grid panels and a coroplast plastic base that you configure yourself. A standard 2×4 grid layout gives you about 14 sq ft and costs roughly the same as the cramped hutch at PetSmart. Buy right the first time.

Housing — what's the difference?

A few common shapes, each making a different trade.

C&C Cage (Grid + Coroplast)

The gold standard. Most space per dollar, fully customizable, expandable as your herd grows.

Floor space
14–20+ sq ft (you configure it)
Setup time
30–60 min one-time build
Expandable
Yes; add grid panels

Best for Anyone with floor space; the long-term right answer for most owners

Tradeoff Requires a one-time build; panels are less rigid than a molded cage

↓ See our pick
Large Pre-Made Cage

Grab-and-go convenience, but only if it clears 8 sq ft. Most don't.

Floor space
8 sq ft minimum (read the specs)
Setup time
15–20 min, no tools
Expandable
No

Best for Renters who want a quick setup and plan to upgrade to C&C later

Tradeoff Hard to find an acceptable size at retail; most look big but aren't

↓ See our pick
Best starter
Kavee

C&C Cage 4x2 with Lid

$$$

Our rating

Kavee's pre-cut C&C panels are the easiest path to a properly-sized first cage. A 2×4 layout gives you 14 square feet, enough for two comfortable guinea pigs with room for enrichment. The coroplast base and all connectors are included, so there's no Home Depot run. This is the cage most guinea pig enthusiasts recommend first; buy it now instead of replacing the pet store hutch in two months.

What we like

  • 14 sq ft of floor space, genuinely comfortable for a bonded pair
  • Coroplast base and all connectors included; no additional materials needed
  • Expandable: add grid panels as your herd grows

What to know

  • Large footprint (~28" × 56"); check your floor space first
  • 30-minute setup; not as instant as a folding wire cage
See on Amazon →
Budget pick
Midwest Homes for Pets

Midwest Guinea Pig Habitat Plus

$$

Our rating

At exactly 8 sq ft, this is one of the only pre-made pet-retail cages that meets the bare minimum for two guinea pigs. It's a reasonable interim option if you're not ready to build, but know that 8 sq ft is the floor, not a comfortable goal. Plan to upgrade to a C&C within 6 months if your pigs are active.

What we like

  • One of the only pet-store cages that clears the 8 sq ft minimum
  • Divider panel included for controlled introductions between new pigs
  • Folds flat for storage or vet transport

What to know

  • 8 sq ft is just barely acceptable; active pigs will feel cramped
  • Wire floor section needs a mat or solid insert to protect foot pads
See on Amazon →
a bunch of small animals in a box

Photo by Marlene Haiberger on Unsplash

Bedding

You have two real choices: reusable fleece liners or disposable paper bedding. Fleece liners are better for allergies, produce no dust, and cost less over time (wash them weekly). Paper bedding is softer underfoot, easier to spot-clean, and the right pick if laundry twice a week doesn't fit your schedule. Avoid wood shavings entirely; cedar is toxic to guinea pigs, and kiln-dried pine has documented respiratory risks.

Best starter
GuineaDad

Premium Fleece Liner (Large)

$$

Our rating

GuineaDad is the community standard for fleece liners. The built-in antibacterial absorbent layer wicks moisture down so the surface stays dry to the touch. Shake out droppings daily, spot-wipe as needed, and wash weekly. No dust, no allergens from wood pulp, and one liner pays for itself over paper bedding in 4–6 weeks. Buy two at once (one in the cage, one in the wash).

What we like

  • Built-in absorbent layer keeps the surface dry between weekly washes
  • No dust, a real benefit for asthmatic or allergy-prone owners
  • Cheaper than paper bedding after about 4–6 weeks of use

What to know

  • Requires laundry twice a week; odor builds fast if you fall behind
  • Order two liners so you always have a clean one ready
See on Amazon →
Budget pick
Carefresh

Natural Paper Bedding (60L)

$

Our rating

The best paper bedding available: soft, low-dust, and guinea-pig safe. Guinea pigs actively burrow and nest in it. If you're not ready to commit to a laundry routine, this is the clean alternative. A large bag covers about two full cage changes.

What we like

  • Guinea pigs burrow and nest in it naturally; they love loose paper bedding
  • Solid odor control for 3–4 days between spot-cleans
  • No setup commitment; add to any cage, change as needed

What to know

  • More expensive long-term than fleece ($25–35/month for a bonded pair)
  • Some dust even in the natural version; open bags carefully
See on Amazon →

Hay & Pellets

Unlimited timothy hay should make up about 80% of your guinea pigs' diet every single day. This is not optional. Guinea pig teeth grow continuously and require constant hay-chewing to stay in proper alignment; a low-hay diet causes malocclusion, which is expensive and painful to treat. Pellets are a small daily supplement (about 1/8 cup per pig), not a primary food. Buy plain pellets with no seeds, fruit, or colored puffs.

Best starter
Oxbow Animal Health

Oxbow Western Timothy Hay (40 oz)

$

Our rating

Oxbow is what exotic vets recommend, and the quality is consistent: green, leafy, and fragrant rather than the pale dusty stuff in pet store bins. Buy the largest bag that fits your storage; the per-ounce cost drops significantly, and you never want to run out. Store opened bags in an airtight container to prevent mold.

What we like

  • Vet-recommended brand with consistently fresh, leafy batches
  • High fiber content keeps teeth worn down and digestion moving
  • No additives, dyes, or artificial ingredients

What to know

  • Pricier per ounce than farm-supply store hay
  • Must store in airtight container after opening to prevent mold
See on Amazon →
Specialty pick
Oxbow Animal Health

Oxbow Essentials Adult Guinea Pig Food (5 lb)

$

Our rating

Plain timothy-based pellets with added vitamin C, the only nutrient supplement guinea pigs genuinely need, since they can't synthesize it themselves. No seeds, no dried fruit, no colorful puffs. One-eighth to one-quarter cup per pig per day. That's the whole pellet program. The bag lasts far longer than you'd expect.

What we like

  • Added vitamin C covers the one nutrient guinea pigs can't make themselves
  • Plain pellets with no seeds or sugar, exactly what vets recommend
  • Timothy-based (not alfalfa), appropriate for pigs over 6 months

What to know

  • Boring-looking next to colorful seed mixes; your pigs genuinely won't care
  • Small daily portion (1/8 cup per pig); one bag lasts longer than expected
See on Amazon →
a black and white hamster in a wooden house

Photo by Chan Swan on Unsplash

Hideys & Enrichment

Guinea pigs are prey animals who need enclosed hiding spaces to feel safe. Every cage needs at least one hidey per pig, plus one extra; resource-guarding over a single hidey is a common source of stress between bonded pairs. All hideys should have two openings so no pig can be cornered. Wood is better than plastic: it's safe to chew, doesn't trap heat, and doesn't crack or discolor.

Best starter
Small Animal Supply

Wooden Guinea Pig Hideout with Multiple Windows

$

Our rating

Two openings, solid untreated wood, sized for a full-grown guinea pig. The community standard for good reason: this is what experienced guinea pig owners recommend first because it simply works. Buy two for a bonded pair.

What we like

  • Two openings mean no pig can corner the other (critical for pairs)
  • Real wood is safe to chew and doesn't trap heat like plastic
  • Fits full-grown guinea pigs, not just pups

What to know

  • Chewing wears it down over time; plan to replace every 6–12 months
  • No base, so pigs will drag hay inside; just part of the deal
See on Amazon →
Specialty pick
Niteangel

Guinea Pig Tubes & Tunnels

$

Our rating

A soft fleece tunnel counts as a second hidey and doubles as enrichment. Guinea pigs love running through tunnels, and the Niteangel folds flat for laundry days. Good for shy pigs that need a covered path between different areas of the cage.

What we like

  • Folds flat for washing; most guinea pigs use this every single day
  • Softer than wood hideys; preferred sleeping spot for some pigs

What to know

  • Some pigs will chew the fabric edges; inspect monthly if yours are chewers
  • Not a substitute for at least one solid wood hidey in the cage
See on Amazon →
Going deeper

Your first month of guinea pig keeping

Most people set up their guinea pigs wrong on day one, usually because the pet store cage is too small and nobody told them. Here's what actually matters in your first month with a bonded pair: the setup, the routine, and the moments that tell you it's working.

Read the guide →
Save your money

What you don't need yet

Beginners get pressured to buy a lot of stuff that doesn't help them play better. Here's what we'd skip on day one.

  • A hamster or multi-pet cage from a pet store — Cages marketed as 'for multiple animals' are sized for hamsters and mice. Guinea pigs need 8+ sq ft; most of these run 2–4 sq ft.
  • Vitamin C drops for their water bottle — Vitamin C oxidizes quickly in water and makes it taste bad, causing pigs to drink less. Get their vitamin C through Oxbow pellets and daily bell pepper instead.
  • An exercise ball or hamster wheel — Exercise balls are dangerous for guinea pigs; their spines cannot safely curve the way a ball forces them to. Never use one. Use floor time in a playpen instead.
  • Colorful seed-and-pellet mixes — Mixes with seeds, dried fruit, corn puffs, and colored bits are junk food. Guinea pigs sort out the sweet pieces and ignore the nutrition. Always buy plain pellets.
  • An elaborate tunnel system or tube habitat — Interconnected tube habitats are designed for hamsters, not guinea pigs. The tubes are usually too narrow for adult guinea pigs and trap heat and waste.
First week

Your first seven days

A short, real plan to get from gear-on-doorstep to actually playing.

  1. Set up the cage completely before bringing your guinea pigs home. They need a quiet, already-arranged space to decompress; don't rearrange anything for at least a week. · Action
  2. Stock unlimited timothy hay before they arrive. This is their primary food source and should never run out. · Buy
  3. Give them 24–48 hours to settle before handling. Let them approach your hand on their terms. Forced handling in the first days can set back bonding by weeks. · Action
  4. Offer fresh vegetables on day two. Romaine lettuce, bell pepper (high vitamin C), cucumber, and cilantro are all safe starting points. No iceberg lettuce. · Action
  5. Set up daily floor time. Guinea pigs need supervised out-of-cage time every day: 30+ minutes minimum. A playpen works perfectly; so does a guinea-pig-proofed corner with a blanket. · Action
  6. Find a local exotic vet who sees guinea pigs before you need one urgently. Not all vets treat small exotics. Book a wellness check within the first month. · Action
FAQ

Common questions

Do guinea pigs really need to live in pairs?

Yes. Guinea pigs are highly social animals that communicate constantly with each other through vocalizations and body language. A solo guinea pig is chronically lonely; many develop depression-like behaviors and shorter lifespans. Switzerland and Germany actually require pairs by law. Always adopt two, ideally a bonded pair from a rescue.

What's the minimum cage size for two guinea pigs?

Eight square feet is the established community minimum, and 10–14 sq ft is recommended for two active pigs. A standard 2×4 C&C grid layout gives you about 14 sq ft and costs roughly the same as the undersized hutches at pet retail.

What do guinea pigs eat?

About 80% of their diet should be unlimited timothy hay, available at all times. The rest is a small daily ration of plain pellets (1/8–1/4 cup per pig) and fresh vegetables. Bell pepper is one of the best sources of vitamin C, which guinea pigs can't synthesize on their own and must get from food.

How long do guinea pigs live?

Five to seven years on average with proper care. This is longer than most people expect when they impulse-buy a guinea pig as a 'starter pet.' Before adopting, consider whether you can commit to 5+ years of daily care, routine exotic vet bills, and the emotional weight of losing them.

Are guinea pigs good pets for kids?

They can be, with the right expectations. Guinea pigs are delicate, dislike sudden movements and loud noises, and don't enjoy being chased. Young children (under 8 or so) often handle them too roughly without meaning to. An adult should be the primary caretaker with children as supervised secondary caretakers.

How much does guinea pig care cost per month?

Once setup is done, roughly $30–60/month per pair: hay ($15–25), fresh vegetables ($10–15), and pellets ($5–10). The big variable is vet care: exotic vet visits run $80–150 each, and you should budget for at least two wellness checks per year plus an emergency fund.

Going further

Where to next

Related hobbies

Browse by category

Authoritative sources

  • Guinea Pig Cages — Cage Size Charts — The original resource that established the 8 sq ft minimum standard. The forum is dated but the cage size guides remain definitive.
  • Oxbow Animal Health — Guinea Pig Care — Vet-recommended nutrition brand with accurate, lay-friendly care guides. The diet and housing articles are worth reading before you bring pigs home.
  • r/guineapigs — Active subreddit with a reliable wiki. Good for quick health questions and local exotic vet recommendations. The sidebar links are curated.
  • Guinea Lynx — The oldest and most comprehensive guinea pig health reference online. Dense, but the illness, medication, and emergency sections are invaluable when something goes wrong.
a rabbit in a cage with a toy on the floor

Photo by John Feng on Unsplash

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