Curious! Please help if you can..

[UncleChester]

I believe cat saliva is host to a few types of bacteria, so that might be a problem for a frog but I have no idea how severe it could be or if it's even a problem. Probably a bigger issue is that cat saliva is often delivered along with cat fang shaped puncture wounds, which few frogs are likely to enjoy.

[GrifTheGreat]

I've never heard of cat saliva being deadly to anything, but like Brian said it's the bite that is usually involved tbat is most likely the part that is deadly.