Cause of puppy death

by Debra
(Spring, Tx)

Hi:

Our female had 6 puppies yesterday. My son was here to deliver them. She had four that birthed about 35 min apart. Her fourth one was still born. He said he then watched her and she didn't deliver again for 3 hours. He said he checked another hour later and she had another pup. He was alive and seemed fine like the others but this morning we awoke and he wad dead. What would cause this. I noticed last night that she kept licking at one and I thought she had another one but there was still only five and they all seemed alive but she wouldn't let us in to touch them. Her box she is in is at 80 degrees so we know it wasn't hypthermia. Any suggestions...the other four are very healthy and feed regularly