Fish
These species of fish have no jaws and excrete a thick, fibrous mucus.
What are hagfish
This type of skin is moist and absorbs oxygen, a characteristic of amphibians.
What is permeable skin.
This term describes how reptiles cannot regulate their own body temperatures.
What is ectothermic.
These are considered the most dangerous bird species in the world.
What are cassowaries.
These two species of mammals are the only ones that lay eggs.
What is the platypus and echidna.
This is the largest group of fishes.
What are are bony fishes.
The larval stage of these amphibians are known as efts.
What are salamanders (or newts).
Testudinata is the order that these reptiles belong to.
What are turtles (or tortoises).
Birds have these types of skeletons to aid in flight.
What are lightweight skeletons.
Unlike reptiles, fish, and amphibians, mammals are __________________, meaning they can regulate their body temperatures.
What is endothermic.
Sharks, skates, and rays belong to this group of fishes, having no ossified bones.
What are cartilaginous fishes.
This order of amphibians superficially look like worms, borrow in moist soils, and have sharp, needle-like teeth.
What are caecilians.
This reptile is confined to the island of New Zealand and has a light receptor on its head, acting like a "third eye."
What is a tuatara.
This bird has the largest wingspan of any living species.
What is a wandering albatross.
This is the only species of marsupial in North America.
What is an opossum.
This is the tail fin of a fish.
What is a caudal fin.
Anura is the order that these amphibians belong to.
What are frogs and toads.
What is Squamata.
This bird impales its half-eaten prey on sharp objects, such as thorns or barb wire.
What is a shrike.
This order of mammal has the most number of species.
What is Rodentia (Rodents).
This is the bony plate that covers the gills in bony fishes.
What is an operculum.
Frogs reproduce using this type of fertilization.
What is external fertilization.
This males of this crocodilian species have large protuberances on the end of their snouts. It is only found in India.
What is a gharial.
This is the order that birds belong to.
What are aves.
The order Chiroptera contains these kinds of mammals.
What are bats.