A dogs temp will fluxuate before whelping. I don't think a temp in the 99s is one that signifies an imminent whelp. I usually don't get a drop that means whelping is coming until the dog hits about 98.0 or less. Doesn't mean she couldn't whelp.
Shes losing her mucus plug, which can happen a week before, give or take. Hopefully she has a little more time to cook those babies.
Good luck! |