I have a bichon/Maltese he’s 10 months and we’ve noticed that he isn’t eating all his food (dry nuts). So we started to give him wet food mixed with dry nuts once a day, the past couple of days he’s had diarrhea. He’s also usually very playful and excited. Constantly! He always wants to play, however the past couple of days he’s quite and not playful, he comes to lie down and cuddle but no playing, barking or licking us as he usually does. Not sure if he’s sick. Should I bring him to the vet?