I am hand rearing a baby guinea pig, when it came to be it had rather fast breathing (came to me at a few hours old) but seemed fine. It's now approaching a week old, eating soaked food and drinking milk, nibbling on hay, pooing, urinating, doing all the right signs. Very noisy and very alert. However, every time I have given it milk, it almost coughs and splutters afterwards, I've tried different syringes, in case it was getting too much air, it sucks on the syringe and swallows itself so am not forcing milk down its throat. I did think perhaps that milk had gone into his lungs, but as he is a week old, I am sure he wouldn't be with us by this time if this is the case. He goes quite quiet after milk, and am hoping that he is just drinking too fast? Would be nice to put my mind at rest on this, Thanks.