What uses chemicals in urine to mark their territory?
rabbit bears viruses male dogs alpacas athletes humans bacteria
A B C D E F G H
Pheromones are chemicals produced by insects to communicate.
male dogs use chemicals in urine to mark their territory
What uses chemicals in urine to mark their territory? (A) rabbit (B) bears (C) viruses (D) male dogs (E) alpacas (F) athletes (G) humans (H) bacteria