Yesterday I noticed my silkie limping when I brought him inside. He was running and moving still but when I held him he didn't seem to want to move. I checked his feet and they look the same so no signs of any obvious injuries. I have two silkies and can't separate them as they cry too much so I let them stay together. He just seems to lay a lot unless he needs to stretch or eat. Is he gonna be okay??? Could he die??