Hi everyone, just wondering if any of you have had an outbreak of tumours in your rats? I was feeding Harland food but haven't went south for a while so switched to pig grower. Rats have been healthy and breeding well. Now recently in the past couple months the females will get a small lump and within a couple days lump quadruples in size. Under eye, on stomach area, neck etc. so it's not always the same place. It's unbelievable how quick the lump grows. The next generations are also getting them, even with outcrossing to the other male so I'm not inbreeding that I know of. In all the years of having and breeding rats I've never seen anything like it it happens from 5 mths old and up. Idk if this group was inbred prior to when I got them or if it's the food or? My males which I got from another source are going strong which leads me to think its unrelated to the food. It's taken a while to get some really neat dumbo rex colors and now idk if i should just start over or what? Any imput would be appreciated.