Only female mosquitoes bite. Females need the protein from blood to produce their eggs.

A squirrel's teeth grow continuously. Their incisors will grow six inches per year, but stay short due to the constant wear they receive.

Glands on the deer's leg & feet leave scent on the trail & help them to communicate with each other.

Spiders have noses on their feet that can pick up the odors of possible prey, predators, or mates.

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