My friend has three cats and one of them has the odd habit of waiting to poop till he sits down to eat. The smell is quite strong so my friend has to clean the litter box first and then return to finishing his meal (which at that point he prefers to skip). It's been like this for years and we couldn't figure out what causes the cat to do this. We were worried he might be unsatisfied with something and the pooping was his way of telling us something wasn't ok, but he seems to be happy overall and gets along well with the other cats. Any suggestions would be appreciated.