I just returned home from holidays this past Tuesday, I had been gone for 5 weeks and my mom had been taking care of my 3 horses. My one old horse, we are not sure exactly how old he is, about 24-27 is.. well getting old. He looks completely different since I left a month ago, much skinnier, although he has always been ribby as he is a thoroughbred cross. He has lost a lot of muscle near his tail, hips, wither, and back. I discussed with my mom today that I would like to baby him throughout this winter, then have him put down next summer. Today I went out to deworm the 3 horses, and when I got to Bodie, my old horse, I noticed his left cheek is very swollen. I have no idea what it is, although he has had severe periodontal disease for atleast 5 years, so his front and bottom gums are receding, we had to have his incisors pulled, and he has had absesses in him mouth. He is about due to have the vet out to do his teeth, but I'm just not sure what to do with him.. is he too old to live through another winter?? Is it strange for him to look like a different horse after one month?? And what's with his swollen jaw?? I'm going to leave him in a stall until tomorrow, if it doesn't look better, I may just have to call the vet. Please help if you have any information. Thank you.