My dog seems to be constipated
My dog has been constipated for the past day or so. First thing I noticed was that usually when I give him food he scarfs it down, the last couple days though he is only eating when he gets really hungry, however he is interested in food. He has eaten enough just not the normal interest in food. He has been going to the bathroom #1 okay, and has tried to poop a couple times and did once and it was kind of thick. He has not really had any access to anything to eat that he shouldn't although I have slightly changed his food lately, from one kind of Beneful to another kind of Beneful... any suggestions?