About 2 day ego my cat return home from outside, i have noticed his was not his self... Hi could not eat( it looked like hi has swollen something) his saliva was drriping out. easterday i went to vets and they told me he was bitten by something( the vet didn't know exactly what was it!!!). I took him home hi looked o.k , had some food , but after few hours everything started again. We found the bite on his tale , but we still don't know and what to do next. Please help if someone has been in the same situation!!!!!!