Recently my sweet calico had her kittens from a stray cat running around. The kittens were perfectly healthy and born around May 1st. They're almost 2 weeks and one (out of four) began to show really odd, yellow crust around the foot. It's close by the pads between the middle toes and it looks a bit swollen on the top. I took some pictures of it. It's some sort of yellow crust like how the skin cracks in winter on your hands. It has been damp lately and we've had humid days one day and extremely rainy the next. We've been covering them up (they're outside cats) to prevent any dampness but I'm not sure about this poor kitten's foot. He doesn't show any signs of pain when i touch it but he's just began to walk and he's perfectly fine. been trying to look up some things about it but all I can find is scaly skin on cats.