Select the one animal that has all of the amphibian traits listed above.
Red-headed poison frogs have moist, smooth skin. Female red-headed poison frogs lay their eggs on plants. The eggs have no shells and are protected by their father. When the eggs hatch, the father frog carries the tadpoles to water. Canadian lynx have furry, padded feet that help them walk on snow. Canadian lynx feed their offspring milk.
Amphibians are a group of animals with similar traits. The following traits can be used to identify amphibians:
They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no shells. 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.
Amphibians have the following traits:
They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A Canadian lynx has the following traits:
It feeds its offspring milk.
It has fur.
A Canadian lynx does not have all of the traits of an amphibian. A Canadian lynx is a mammal.
A red-headed poison frog 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 red-headed poison frog has the traits of an amphibian. A red-headed poison frog is an amphibian.