Dog lethargic, runny & mucous-like poop
My dog has been very lethargic and even week the last two days and has loose stools and sometimes mucous-like stools. He has a poor appetite, but it's not completely gone. He is an 11 year old Beagle/Lab mix. He is up to date on everything and had his heartguard tablet on the 1st. He eats a dry food diet am and pm (Diamond Naturals Dog Food). Any ideas what could be wrong? I'm very worried about him. :( Also, unfortunately the vets are closed today and tomorrow --- so if there is anything I can do for him until Monday it would be good :(