Don't what to sound heartless or anything here but why even try to save the thing? why not just put it out of its missery? found in a pool without its mum in the middle of winter. not knowing how to feed it or anything. would it not have just been better to put it under your boot and end it quickly? thats just my opinion. just like i don't understand why people try and save half dead mice from their cats. the chances of survival are slim to none so why not just let your cat have its meal.