a person who studies animals
What is a Zoologist?
an animal that has a vertebral column
What is a vertebrate?
the percentage of all animal species that are vertebrates
What is 3%?
Mammals
What is skin with hair?
toad, salamander
What are amphibians?
backbone, spinal column, or spine; made of bones called vertebrae
What is a vertebral column?
an animal that does not have a vertebral column
What is an invertebrate?
the percentage of all animal species that are invertebrates
What is 97%?
fish
What is skin with scales?
duck, robin
What are Birds?
skeleton of a vertebrate; located inside it's body
What is an endoskeleton?
an animal with a constant body temperature
What is a homeotherm?
a change of body form during an animal's life cycle
What is metamorphosis?
reptiles
What is dry, scaly skin?
human, bat
What are mammals?
the bones of the skull that cover and protect the brain
What is a cranium?
an animal whose body temperature changes with its surroundings
What is a poikilotherm?
two classes of vertebrates that are homeotherms
What are mammals and birds?
birds
What is skin with feathers?
lizard, snake
What are reptiles?
carries messages from the brain to other parts of the body and back to the brain.
What is the spinal cord?
larva
What are the young of amphibians called?
class of vertebrates that have young born live
What are mammals?
amphibians
What is moist, smooth skin?
tuna, salmon
What are Bony Fish?