I have three Squirells that I have had for almost two years now. I have notice that one of the males feels alot skinnier then his chubby brother. I give them mazzuri blocks which they love and I also give them a large array of fruits and veggies. I have not given them many nuts lately. could this be attributed to the weight loss? he doesn't feel too boney and he acts normal and eats normal just seems like he's lost a little weight and it's starting to concern me. I also give them mushrooms and calcium tablets but he's not showing me any signs of bone issues. should o give them more peanuts for the fat?