A domesticated mammal that's often kept as a pet by humans.
Dogs don't eat yukkuris but they love to chew and play with small objects and as such are usually dangerous to yukkuris anyways. And it doesn't help that humans don't care for yukkuris and so they generally don't prevent their pet dogs from killing yukkuris. However it's not impossible for a dog to befriend a yukkuri.
Use this tag only for actual dogs, don't use for momijis