My chihuahua stores pieces of her food in the sides of her mouth like a chipmunk, not a lot of food, usually like 1 piece and then she walks around like that, I wasn't aware at first but I saw a bump on her cheek and got worried so I went to go feel it and then she spit out a piece of dog food and the bump was gone, she had been laying in bed with me for about 5-10 minutes and didn't get up so it wasn't like she just got the piece of food