Select the one animal that has all of the mammal traits listed above.
Adult tiger salamanders have moist, smooth skin with stripes. They live in burrows underground, but they begin their lives in water. Young tiger salamanders hatch from eggs with no shells underwater. Okapis have hair and live in forests in Central Africa. Female okapis feed their offspring milk. Adult okapis are herbivores. Herbivores are animals that are adapted to eat plants.
Mammals are a group of animals with similar traits. The following traits can be used to identify mammals:
They feed their offspring milk.
They have fur or hair. Observe the animals and read the descriptions.
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group.
Mammals have the following traits:
They feed their offspring milk.
They have fur or hair.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A tiger salamander has the following traits:
It spends part of its life in water and part on land.
It has moist skin.
It makes eggs with no shells.
A tiger salamander does not have all of the traits of a mammal. A tiger salamander is an amphibian.
An okapi has the following traits:
It feeds its offspring milk.
It has hair.
An okapi has the traits of a mammal. An okapi is a mammal.