animal species
Refers to a biological species of animal. Used in scientific, environmental, or general contexts.
Rare animal species inhabit this island.
We need to protect animal species that are at risk of extinction.
生物種 is a broader term for 'species' of any living organism, while 動物種 is limited to animals.
Compound of 動物 (どうぶつ, 'animal') and 種 (しゅ, 'species').