I volunteer at the animal shelter, and thought I'd share some info about the staff's preferred bedding for the shelter animals. I know many of you make beds, and I do that too. But today one of the young ladies on staff told me what is actually helpful and works for them is the washable bed pads (I believe they are used frequently in hospitals and nursing homes).
The bed pads are absorbent but have a waterproof bottom which prevent leaks from the rest of the animal's housing area. They also do not encourage the chewing of the bedding...since I help with the laundry, I have seen several beds with the fabric chewed into, giving access to the stuffing insides...not good for the animal.
My shelter was lucky enough to receive a large donation of the pads, but wanted to pass this insight to other pet bed makers. Maybe there is a do it yourself version out there that could be made and given to your to your shelter as well.
Here's a link just for reference...I googled washable bed pads ...
https://www.amazon.com/ReliaMed-Reus...5F954WMNPPZMPP