Physiology
Bulbasaur is a reptilian creature that somewhat resembles a toad or a young dinosaur with a spotted blue-green hide.
Origin
Bulbasaur appears to be based on some form of Dicynodont, mammal-like reptiles from the Permian period, though it also has features from toads and frogs as well as other reptiles. Its also has visible ears, which are not seen in reptiles but are in mammals. Its bulb resembles that of a lily or onion.
And other than that, it is known as the seed-Pokémon.
^He's lying.
Wii FC: 6994-9886-0165-7282, Gamertag: Cobaltos