a question on sexual pheromones

[Ara]

Just for the record, this topic isn't about me. It's not like I'm trying to simulate pheromones or to be mounted (I'm only straight) or anything. It's just mere curiosity. My curiosity about this started when I saw how male dogs get so highly excited when smelling female dog's (in heat) urine, and the response is so high that I wondered if something similar could happen if they smelled other species female's (in heat too) urine. If they also got excited by that, I'd say it's just an evolutionary accident/coincidence, but I wondered if it even happened to begin with. I know interspecies sex in animals happen because of other simple things but I also wondered if that was at least part of that reason (it seems not).