my kitten, Slinky won't play with the other animals. When watching them all i can see is tht tey just want to play with her. She doesn't know how to play. I try to put her on the living room floor even when my other cat and two dogs aren't around but yet she won't stay there, she just jumps back on the couch. even when she is all by herself all she does is lay on a couch or bed, rarely does she ever go on the floor for any reason except to eat or use the litter box. should i be alarmed or is it just a phase?