I found a 5 week old squirrel after a storm on Monday. He has a clicking noise while breathing, was doing alright after being bottle fed but then the clicking got worse. Now he won't eat and has been barely moving very weak and the clicking got worse. His breathing was rapid, now it is slow and he is lethargic. PLEASE HELP. He is only 45grams in weight. I have amoxicilin AMOX/CLAV 875/125mg tablets I can crush up...how much is the right dose? NEED HELP ASAP!