We adopted Grace about 2yrs ago & the shelter estimated her age at around 2 yrs old. Every dog we have had prior to her, we had from puppies & they were spay around 6 months of age & they all had a nice tuck to their belly area. Grace has a rounded belly. The Vet is good with her weight - she has good muscle tone and definition to her waist. Could her rounded instead of tucked belly area mean she has had puppies in the past? Oh, she is a Schnauzer. Just curious- she is such a good dog & I find myself wondering about her past before we adopted her.