My lab is about 8 years old. She had bad diarrhea in her kennel last night. She won't eat today, its super hot, should I be worried or just see how she does.

You can give her some pepto to see if that calms her tummy. The dosage is 1ml per lb of body weight. Or 1tsp per lb of body weight.

Sometimes dogs get into things and get bad belly aches. Provide water for her at all times and keep a close eye on her bowel movements. If in 3-4 days of runny diarrhea, she needs to see a vet.

For feeding her, cook up some rice with browned hamburger or chicken. It's easy on the tummy.