What uses howling to warn others?
alligators each species fish catfish animals gila monsters humans wild canines
A B C D E F G H
Wolves are distinguished from other wild canines by their size.
wild canines use howling to warn others
What uses howling to warn others? (A) alligators (B) each species (C) fish (D) catfish (E) animals (F) gila monsters (G) humans (H) wild canines