SOUTH PORTLAND — South Portland police are investigating after a woman claimed three of her cats have been shot within the last year, all on separate occasions. Karen Rasmussen of South Portland has three 11-year-old male cats that she’s been raising since birth. She said they’re primarily indoor cats, but they go outside when it’s nice out. She said there have been some instances where they’ve gotten into fights with other cats and her neighbors have complained. Despite her efforts to keep them indoors, Rasmussen said last June her cat Furball went outside and came back with a tethered paw. She took him to a Scarborough vet who said the cat was shot with a .22 caliber gun or a pellet gun.