They may not have your perticular breed of duck, and to say that it is no problem to replace, is an overstatement. If the bird is a flying bird, that will be easier to fix, but if it is a sitting bird, you have to remember that the support wire is in the feet, and it needs to be ran through the form of the duck body to make sure it is anchored firmly (to the form and to the base of the mount). They do make artificial feet, but divers are not a very common line they carry. Was there any type of preservative in the duck feet? It surprises me that a cat would want to eat it otherwise. If it is a flying bird, you can shoot yourself another Redhead and replace the eaten feet with some new ones. I will say it won't look perfect, but it should be good enough for the average person. Once the skin of the bird is preserved, it is pretty dry and the juncture where the leg meets the feather on the leg will be slightly flawed. Hope this answers your question. If you have alot of Redheads in your perticular region, I'd just replace it. That's just me though.