Dog Facts for Kids
Canis familiaris · KAY-nis fuh-MIL-ee-AIR-is
Our oldest animal friend, in every size from tiny to giant.
- 🏃 speed: not yet checked
- ⚖️ 55 to 100 lb25 to 45 kg1
- 📏 size: not yet checked
- 🎂 15 years15 years2
- 🍽️ plants and animals
- Not on the Red List (Not assessed)
A dog is a pet that lives with people. Dogs wag their tails when they are happy. They love to sniff, run and play.
Dogs came from wolves long, long ago, when people and wolves began to live side by side. Today there are big dogs, tiny dogs, fluffy dogs and smooth dogs, but they are all one kind of animal. A dog's nose is far better than ours, so it learns about the world by sniffing.
All pet dogs belong to one species, from a giant dog to a pocket-sized one. People bred them over a very long time for different jobs: herding sheep, pulling sleds, guarding homes and keeping people company. A dog's nose has far more smell sensors than a person's, which is why dogs help find lost people. The sizes on this page are for the sled dogs of Denali National Park, because pet dogs come in every size.
How big is a dog?
Dog: no checked size yet, so there is nothing to draw. We only draw what a source says.
Dog in numbers
| Length | no checked number yet |
|---|---|
| Height at the shoulder | no checked number yet |
| Weight | 55 to 100 lb25 to 45 kg1Denali's sled dogs, which are Alaskan huskies: 55 to 100 pounds; pet dogs come in every size |
| Top speed | no checked number yet |
| How long it lives | 15 years15 years2about; Denali's sled dogs |
| What it eats | dog food, which has meat and some plants in it |
| Where it lives | homes and farms all over the world, wherever people live |
| What kind | Mammals |
| Is it in danger? | Not on the Red List (Not assessed) |
A number we couldn’t find on a page we trust says so, instead of guessing.
Wow!
- Every pet dog, big or tiny, is the same species.
- Dogs came from wolves that lived near people long ago.
- A dog learns about the world mostly through its nose.
Compare the dog
Friends and neighbours
Cat
Horse
Gray wolfThree questions
Books about the dog, free at the library
Ask a grown-up to tap the button: it shows where to borrow a book about the dog for free.
Where these numbers come from
- National Park Service, Denali: the sled dogs of Denali (PDF), checked 31 October 2026.
- National Park Service, Denali: retiring dogs and the adoption process, checked 31 October 2026.
- Wikidata, Dog (Q144), checked 30 October 2026.