My Lexie hasn't pooped in 24 hours? She normally goes twice a day. Can puppies get constipated? She is 4 months old and into everything, but she pretty much never leaves my sight, so I don't think she ingusted anything that could be causing blockage, but then again she is sneaky and if I look a way for a second she's found something else I have to pry from her mouth. She eats wellness food, and the only part of her diet that has recently changed is the treats I have started giving her in the last few days - really small peices of boiled chicken for training purposes. Could that be causing constipation? Is there anything I can do? Is there a certain amount of time I should wait until I need to take her to the vet to get checked. Pleas help - I'm worried about her