Question to you: What do male dogs use in urine to mark their territory?
Options:
- (A) Natural aphrodisiacs
- (B) competing for resources
- (C) Tails
- (D) Urine cleaner
- (E) Something coming from a gland
- (F) Chemical energy
- (G) an area swollen with pus
- (H) Chew toys.
Let's reason step-by-step:
Male dogs use pheromones in urine to mark their territory. Pheromones are natural aphrodisiacs. Male dogs use natural aphrodisiacs in urine to mark their territory. Final answer: (A).