Many people worry about their pets being attacked by bed bugs. While bed bugs will feed off pets, they preffer hairless hosts, like humans.
Bed Bugs will feed on pets if that's the only thing that's available for them to find. In other words if the humans are not around or out of town, then they will be a creature of opportunity find your pets, feed off of them. They do prefer a hairless host, which would be us as humans.