Is a dragon an animal

Answer 1

No, a sea dragon belongs to the class Actinopterygii, a ray-finned fish.

Answer 2

Nope. Dragons lay eggs, they don't give live birth. Unless they are like the platypus, they are probably reptiles.

Answer 3

Technically, yes. However most people think that they are extinct but some species are alive today.

Answer 4

No, dragonflies belong to the insects and the order Odonata.

Answer 5

The sea dragon is mythical.

Answer 6

As dragons are fictional, they can be whichever best fits the lore for a given world.

Many traits associated with dragons do appear in a few mammal species, but not all in a single one. Monotremes lay eggs, Pangolins have scales, whales have isodont teeth, and bats have membranous wings. Dragons are commonly depicted as warm-blooded as well. However, the defining feature of mammals is the ability to produce milk. If a dragon produces milk to feed its young, it would be a mammal, albeit an extremely strange/specialized one. Otherwise, it would more likely be a reptile.