I'm a little worried about my oldest rat, Tilly. She's been shedding a LOT lately, and her fur on her back isn't soft, it's fairly coarse. She's the only one of my five I've noticed shedding in, I only have 1 other PEW and a hooded and their fur feels the same but I'm finding a LOT of white fur near where Tilly's been sleeping or after she eats, there's some. Also, I'd been noticing weird shaped poo but couldn't figure out who it was coming from, just saw her poo, it's definitely her. Some of her poos are normal but a lot are skinny and wrinkly/lumpy. Really thin and kinda long but then normal ones too, not runny, sometimes even dry. Shes a pet store girl, PEW, big but not crazy fat, bred for food. She's like 21 or 22 months old, almost 2. She's definitely getting up there. She's acting the same, not losing weight, but I think this is just old age right? I really hope so because I don't really have money if there's a vet bill.