Have a 6-7mth old male pup which I got from a rescue group.Well he came complete with his own teddy bear.He sucks on the legs of it and kneads it with his paws.Ive watched and he closes his eyes while he does it.Does anyone know why he does it?It can be annoying especially when I can hear sucking noises quite loudly at times.Will I do any harm if I wean him off it or do I just wait till he grows out of it?