I've got two cats, my male Siamese has constantly been in and out of his (shared) litter tray for the last week. He goes in, jumps out then 5 minutes later hes back in again. Being Siamese he seems to have quite strange habits any way so I'm not sure if this is normal for the beed? I only notice it when I'm in the kitchen. He's an indoor cat and I can't tell if he's actually useing it everytime or just digging and jumping out. Is this concerning or not? Is there anything I can do to monitor it a bit better?