Grade 2 science worksheet on mammal classification, featuring terms and images to identify mammalian characteristics.

A Grade 2 science worksheet titled "Animal classification: mammals" with instructions to circle words describing mammals and animals that are mammals. The worksheet includes a table with terms like "cold-blooded," "has sweat glands," "breathes through their gills," "with fur or hair," "vertebrates," "has antennae," "often with wings," "warm-blooded," and "produce milk for babies." Below the table, there are images of a vulture, lion, cat, gorilla, snake, and camel.