If there's one lesson that human history has to offer, it's that people will do a lot for just a little bit of sex. Well, the gods are no different. Bob seems willing to destroy the whole earth for some sex in There Is No Dog. Not only that, but he doesn't even know if what he is feeling is love or lust. What's the difference? We wish we knew.
Rosoff suggests that, unlike love, lust is not a universal feeling.
There Is No Dog suggests that lust is basically a negative force in human relationships.