We found one dictionary that defines the word young mammals:

General (1 matching dictionary)

1. young mammals: Vocabulary.com

(Note: See young_mammal as well.)

Definitions from WordNet (young mammal) ▸ noun:  any immature mammal ▸ Also see young_mammal ▸ Words similar to young mammals ▸ Usage examples for young mammals ▸ Idioms related to young mammals ▸ Wikipedia articles (New!) ▸ Words that often appear near young mammals ▸ Rhymes of young mammals ▸ Invented words related to young mammals