There are both vertebrates(things with backbones) & non-vertebrates(animals without backbones).
which characteristic do all vertebrates have in common as embryos
A nonvertebrate is an animal that does not have a backbone or spinal column. This includes a wide range of animals such as insects, mollusks, and jellyfish. Nonvertebrates make up the majority of the animal kingdom.
Snakes are vertebrates.
vertebrates
A toucan is a bird, and all birds are vertebrates.
Dolphins are vertebrates.
They have a skeleton & are therefore Vertebrates
Ostrich's are vertebrates as they have a spine.
Pelicans are birds and, like all birds, they are vertebrates. Pelicans have a backbone and an internal skeleton.
vertebrates have a backbone invertebrates don't
They are called vertebrates
Squirrels are vertebrates, they have spines.