💸 The True Lifetime Cost of a Pet: 43 Pets Compared

Everyone asks what a pet costs per month — but the number that really matters is what it costs over its whole life. We took the ongoing monthly cost (food, bedding, and supplies) of 43 pets and multiplied it across each animal's average lifespan. The results flip the usual "cheap vs. expensive pet" story on its head.

Key findings

• The cheapest pet to keep is the land snail at about $9/month; the priciest is the pony at about $275/month. Across all 43 pets the average is $39/month (median $30).
• Long life is the hidden cost. The most expensive pets over a lifetime aren't always the priciest per month — they're the ones that live for decades. A tortoise costs only about $45/month, but over its ~75-year life that's roughly $40,500 — more than triple a dog's $12,750 lifetime cost.
• Large parrots can run about $51,000 over ~50 years, and the pony tops the chart at roughly $99,000.
• The lowest lifetime cost belongs to short-lived small pets like the praying mantis (about $120).

Estimated lifetime cost, ranked

Pet	Monthly cost	Avg lifespan	Est. lifetime cost
Pony	$150–$400/mo	25–35 years	$99,000
Parrots & Larger Birds	$50–$120/mo	30–70+ years	$51,000
Tortoise	$30–$60/mo	50–100+ years	$40,500
Mini Pig	$50–$120/mo	15–20 years	$17,850
Aquatic Turtle	$25–$55/mo	20–40 years	$14,400
Iguana	$40–$90/mo	15–20 years	$13,650
Dog	$50–$120/mo	10–15 years	$12,750
Goat	$40–$90/mo	12–15 years	$10,530
Cat	$30–$80/mo	12–18 years	$9,900
Blue-Tongued Skink	$25–$50/mo	15–20 years	$7,875
Snake	$15–$40/mo	15–30 years	$7,425
Chinchilla	$25–$50/mo	10–20 years	$6,750
Sugar Glider	$30–$60/mo	10–15 years	$6,750
Axolotl	$25–$55/mo	10–15 years	$6,000
Ferret	$40–$80/mo	6–10 years	$5,760
Rabbit	$30–$60/mo	8–12 years	$5,400
Gecko	$20–$40/mo	10–20 years	$5,400
Bearded Dragon	$30–$60/mo	8–12 years	$5,400
Duck	$25–$55/mo	8–12 years	$4,800
Chameleon	$30–$60/mo	5–8 years	$3,510
Parakeet & Small Birds	$15–$35/mo	7–15 years (varies)	$3,300
Chicken	$20–$45/mo	5–10 years	$2,925
Newt & Salamander	$10–$25/mo	10–15 years	$2,625
Guinea Pig	$25–$45/mo	5–7 years	$2,520
Hedgehog	$25–$50/mo	4–6 years	$2,250
Tarantula	$8–$20/mo	5–20+ years (females live longest)	$2,100
Aquatic Frog	$10–$25/mo	5–15 years (varies)	$2,100
Hermit Crab	$10–$25/mo	up to 10+ years (with great care)	$2,100
Anole	$15–$30/mo	4–6 years	$1,350
Millipede	$8–$18/mo	5–10 years	$1,170
Scorpion	$8–$20/mo	5–8 years	$1,092
Fish	$10–$35/mo	2–5 years (varies)	$945
Quail	$15–$35/mo	2–4 years	$900
Crayfish	$10–$25/mo	2–5 years	$735
Rat	$15–$30/mo	2–3 years	$675
Gerbil	$10–$20/mo	3–4 years	$630
Hamster	$10–$25/mo	2–3 years	$525
Land Snail	$5–$12/mo	3–7 years	$510
Hissing Cockroach	$5–$15/mo	2–5 years	$420
Shrimp & Snails	$8–$20/mo	1–3 years	$336
Mouse	$8–$18/mo	1–2 years	$234
Stick Insect	$5–$15/mo	1–2 years	$180
Praying Mantis	$5–$15/mo	under 1 year	$120

Method & caveats

Lifetime cost = the midpoint of each pet's typical monthly cost (food, bedding, litter, and everyday supplies) × 12 × the midpoint of its average lifespan, using the same care data behind our pet cost calculator. These are deliberately conservative ongoing figures: they exclude one-time setup (cage, tank, gear), adoption or purchase price, and vet bills — all of which can add hundreds or thousands more. Real costs vary by where you live and the choices you make. Treat these as ballpark comparisons, not quotes. For a fuller all-in picture that adds vet care and one-time setup, the ASPCA estimates first-year ownership at roughly $1,270 for a dog and $1,070 for a cat — so real totals run higher than the ongoing figures here.

Sources

• ASPCA — Cutting pet care costs (ownership cost estimates)
• Anti-Cruelty Society — Estimated annual cost of owning a pet

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