List five characteristics of animal hormones.

The 5 characteristics of animal hormones are:

1. The animal hormones are secreted by the glands known as endocrine glands. The endocrine glands are ductless glands.

2. The animal hormones are secreted in small amounts.

3. Each hormone has its specific function which it performs.

4. The hormones are the special messengers that control body functions.

5. The timing and the amount of hormone released are regulated by specific mechanism.