One of my WTF is completely submerging himself in the waterdish. He leaves just enough of his nose out to breath, but soaks all day long and night. I had to coax the guy out yesterday for food? Normally my WTF would just go onto the ramp in the waterdish and soak their back legs. So this is completely new. I thought he was stuck the first time, but he knows how to get out and keeps going back. Is this normal? Any advice would be great!