So I haven't spent as much attention on Loki as I used to partially because I got my own dog for my birthday and my parent recently acquired two german shepard puppies that require a LOT of time. Well I noticed today when I went to feed them that he wasn't rushing over to the food like he usually does and then it struck me that he's been not rushing to the food for a little while now. I can't say exactly when it started though. Anyway I picked him up to say hello and pet him and all and he's REALLY skinny I mean we're talking about a BIG rat and I don't just mean fat I mean just a large sized rat so for me to pick him up and be able to feel his rib cage and spine is horrifying. I took him to my mom so she could look and of course all she did was tell me it's my fault and not really care at all cause she hates the world. I noticed as I was talking to her that Loki was moving his head in and out like he was gaging or choking so I immediately took him back to his cage so he could work it out. Then I noticed his eye. his right eye looks just fine but his left is greyish looking with a brown spot on it like something is stuck on his eyeball but he doesn't act like there's anything on his eyeball. I tried to get it out but I didn't want to scratch his eye. So I did what any young adult mother would do and began to search the internet for help. I found nothing so I am now turning to you guys once again for help because you are my only option. I'm very scared and worried for Loki. He's my boy and he's lost so much weight he's like a fraction of the rat he used to be in every way. Is this just aging or is thing something more? Also his cage mate Thor looks totally fine I checked him over. Please help me?!?!