As Barb Zibrik pulls up into the driveway of a small stucco house with an overgrown yard plunked among the small businesses, an open trailer containing a few branches comes to life.

Four feline heads — two gray, one black, one orange — pop up to see who’s arrived. Another cat, this one black, watches warily from beside the house.

These cats and dozens more belong to no one. Some of them probably had an owner at one time, but no more. Now, no one can get close enough to touch them. No one can tame them.