This is my first litter I've got the mum and the dad jack russells she had 9 pups on the 13.12 my birthday lol we have a little one (runt) the vet says I should feed him witch I am doing he take a little bit at a time out the bottel but her crys alll the time why is that he feels warm when I put him back in with mum he's just can't seam to be able to latch on any one got any advice thank you for you time jo