try curling the sides down, to make them not as tall, they might not like blocked field of vision. most of the cat beds that our crew uses have low sides, my wife once bought a plush little house style bed, instead of going inside it jolene climbed on top and flattened it out to shallow bowl shape, has used it that way since..
yeti cat: two toes short of the record books
eons ago there must had been a creature with a roar
like a vacuum cleaner, it most likely ate cats.
smokey,yeti, pansy, violet, ember and brullie
jolene, tammi and emma the ghost kitties in the house