At San Francisco senior dog rescue, a resident cat clocks in to test which pups can live with cats - The Cool Down

In San Francisco, a unique approach is being taken at a senior dog rescue. A resident cat is being used to test the compatibility of dogs with cats. This test is part of the process at the rescue, which is working to find suitable homes for senior dogs.

Further details about this initiative can be found through local news sources, such as The Cool Down, which has more information on the senior dog rescue and its efforts.