When I got my golden doodle puppy this past Friday, he pooped in the car and it was a brown, soft stool. His breeders were giving him food called 4Health, but since the store that carries that brand isn't near us, we bought Wellness Complete Health Puppy. The breeders gave us a little bit of his old food and told us to start mixing in 50/50 of the old and new food on the third day. The first day we got him, he poops were always soft and brown. But after giving him the food 50/50, his stool changed to a mustard color and it came out much softer (I don't know if I would call it diarrhea because it's not completely liquid). We have also been giving him these treats called Wellness Soft Puppy Bites in lamb and salmon as treats whenever he goes to the bathroom outside. Since his poop was much softer and mustard colored when we did 50/50, we decided to do 25% Wellness Complete Health and 75% 4Health instead. His stool is still mustard colored with sometimes a little bit of brown mixed in, but not as liquid. Today, we were trying to train him to like his crate and know his name. Because of this, we were giving him more of the soft bite treats than usual. When he pooped later, it was much softer again and mustard colored. Whenever the stool has been mustard colored, it has been a lot smellier as well. When we looked up the reviews online for the soft bites, we saw that it caused diarrhea in some puppies. So we have now decided to stop giving him the soft bites as treats and instead give him pieces of boiled chicken breast. I wanted to know if that would be a good and healthy choice for him. Also, during the night we have to take him out of his crate 2-3x and take him to poop/pee outside. Since I want to use the chicken as a treat now, would it be ok if I shredded the chicken up, put it in a ziplock bag, put that in the fridge, and take it out during the night when I need to take him outside? Would it be ok to feed him cold chicken? I just don't know if I will have the time to put the chicken in the microwave during the night every time he wakes up because I usually have to take him out quick. I would also like to know if these stool changes are normal or if they aren't, then if I should take him to the vet. Thank you!