Domestic pets make great fly materials also. I have two dogs and a cat... the best fly tying resource of the lot is my Vizsla, named "Reba" shown here because she's a neurotic redhead. Now, for those of you unfamiliar with Vizslas, they don't grow enough hair to clip with scissors, but if I rub my hand on Reba's back (which she never minds), I end up with little red stubble hairs stuck to my fingers. One evening as I was tying flies at the kitchen table, she came over to visit... I rubbed her back... noticed the stubble... just happened to have some 6/0 thread hanging from a hook in the vise and some dubbing wax nearby... and in 10 minutes or so, the "Hungarian Bird Brain" nymph was born. It's basically pheasant tail with a rough- dubbed fuzzy body, and it actually catches fish. Kinda cool too... a fly that combines the feather of the pheasant, and the fur of the dog that pointed it. But I only tie a couple every year. I wouldn't want Reba to get too cold.