No puppy lemon law in Missouri
Missouri has no pet purchaser protection law that we know of. If you bought a sick puppy you can still rely on your sales contract and its health guarantee, on general consumer protection law and on small claims court.
That makes the contract more important here: ask for one in writing before you pay.
Minimum age to sell a puppy
In Missouri a puppy must be at least 8 weeks and weaned old to be sold.
Federal Animal Welfare Act rules (9 C.F.R. § 2.130) bar licensed dealers from shipping puppies under 8 weeks old that are not weaned, in every state.
What to do if you bought a sick puppy
- Take the puppy to a veterinarian right away and ask for the diagnosis in writing.
- Tell the seller in writing, with a copy of the veterinarian's statement, and keep proof that you sent it.
- Choose what you want: a refund, an exchange or keeping the puppy with the vet costs paid, as far as your contract allows.
- Keep everything: the contract, the ad, messages, receipts and vet records.
- If the seller refuses, contact the consumer protection office of the Missouri attorney general or file in small claims court.
Buying a puppy in Missouri
We list 524 dog breeders in Missouri, with phone, website, public reviews and a map.
This is a plain-language summary, not legal advice. Laws change and have exceptions: read the statute or ask the consumer protection office of your state attorney general before you act.
Summary based on the state statutes as listed by the Animal Legal & Historical Center of Michigan State University College of Law (purchaser protection laws as of 2023, minimum sale age as of 2025).
Questions
Does Missouri have a puppy lemon law?
No. Missouri has no pet purchaser protection law that we know of. A buyer can still rely on the sales contract, on general consumer protection law and on small claims court.
How old does a puppy have to be to be sold in Missouri?
At least 8 weeks and weaned. The rule applies to any person (2 C.S.R. 30-9.020).