Dogs and Plague

Sleeping with Dogs have consequences :

So a case of plague makes public health investigators, and bioterrorism responders, come running. And as recounted by the CDC Friday morning, they ran to Oregon — and found no sign that this rural household had been subjected to a bioterror attack or involved in anything nefarious. But they did find dogs. One of the dogs slept on the bed of one of the humans. They checked the dog, which looked healthy, and in its blood they found evidence that, at some earlier point, the dog had been infected with Y. pestis too.

http://www.wired.com/wiredscience/2011/02/dogs-fleas-plague/