Animals can smell heavenly and bring up lots of strong emotions in me. I often stick my face in my dog's fur to sniff on them because it's comforting, and I did the same with my mare while I had her. I don't really think a female dog's sex smells like a whole lot unless she's in heat, and then I don't really enjoy the scent they give off there. Male dogs do have a particular scent to their cock which is pretty pleasant I think. As for the horses, well drawing upon the air under a mare's tail can be downright intoxicating. It's something you can't even hope to know until you've experienced it.