Officials with Animal Friends in McKeesport say three dogs on the same street are being treated for liver failure and other symptoms that suggest they've been poisoned in recent days.
One of the dogs, a boxer named Vader, was apparently poisoned just before Memorial Day and has lost about 20 pounds since then. His family expects to decide by Tuesday whether he'll have to be euthanized or whether there's hope he'll recover.
A pit bull and a small Chihuahua mix have also been poisoned on the same street.
McKeesport is about 10 miles southeast of Pittsburgh.