Tyson my 9 year old boxer is not eating at all, but he’s drinking water! He‘s also lethargic and very clingy! I don’t know if it’s because we went out of town this past weekend! And our Relatives have a pit bull but they havent ever met and we put one up in bedroom and let other out and vice versa, but this past weekend after going out of town they came to our house! Could he not be eating because another dog was in his house or what!? He isnt throwing up or have diarrhea! He ate a couple bites of the other dogs food!! He also has IBD and is on medication to make him digest his food which he’s been on for 6 years and he’s on a special diet of Royal Canin Gastrointestinal! He is doing the same exact things our other boxer did before he passed, so I’m very worried! Thanks!!