Hello and welcome to this forum!!!!
Although having your cockatoo play and eat with your cat is undoubtebly very cute, so you are aware even if they get along well it is actually a major health risk, as cat saliva contains very very harmful bacteria that is very harmful (and even deadly) to parrots.
to quote "The bacteria found in the saliva and the mouth of a mammal can cause fatal septicemia (infection in the bloodstream) of a bird in very short order. Cat bites should be considered the most dangerous, as the Pasteurella bacteria commonly found in the feline mouth, are extremely hazardous to birds.' from-
http://www.exoticpetvet.net/avian/topten.htmlI hope that you can find this useful.
Also not to nag, but we would all love to see picture of your little (big) baby, we love to see pictures of other peoples cutie pies
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