My 18 month old Suzi has had a runny stools and tried to vomit several times throughout the night , however it was just dry heaving, nothing came out. She has been laying around most of the day resting, however, moves to place to place , making herself comfortable on the couch to the bed, or bext to me by the computor

. Thankfully, she has not had any more diarreah, or vomiting. I tried to get her to drink water, but she refused, however, she ate a pepornoni stick Lean, and little bits of flour tortilla ,and tiny pieces of cheese, she was fine, no throwing up . She still wants to rest. At one time she perked up and played with the puppy. however, layed right back down .
The puppy vomited once yesterday for the very first time ever > She is just 3 1/2 months & was also laying around all day too. Today the puppy is okay, now Suzi is not. But the puppy did not have the runny stools .
I have know idea what this is? OR if it is any related to each other! Both my babies are going through something

They don't go outside . it is too hot, and the pup is too young .
They , do however, try and scratch or find stuff underneath the stove > However, I have never seen them be sucessful !