I found an animal rescue group that willingly takes anything I make. They have foster families that host the dogs until they are adopted. This last batch, I made with an outer covering that can be washed. I've asked for feedback and once I receive it, I'll share here. My purpose is to utilize all bits of fabric, etc. If I have to add larger pieces of batting......I'm defeating my purpose. (I'd rather use those larger pieces for placemats, coasters, baby quilts, etc.).
If the shelters are getting specific on what they need, check out rescue groups