The hepatic portal vein in frogs is unusual in that it is divided into two portals, the hepatic and the renal. In higher vertebrates, the hepatic portal system is the only one present.
Snakes are vertebrates.
vertebrates
A toucan is a bird, and all birds are vertebrates.
Dolphins are vertebrates.
Ostrich's are vertebrates as they have a spine.
They have a skeleton & are therefore Vertebrates
Pelicans are birds and, like all birds, they are vertebrates. Pelicans have a backbone and an internal skeleton.
There are both vertebrates(things with backbones) & non-vertebrates(animals without backbones).
vertebrates have a backbone invertebrates don't
They are called vertebrates
Vertebrates.