PeggySue said
"I put a rubber backed bath matt on top and then wrapped upholstery material over and stapled it underneath. With the right size almost all the dogs relax on it".

That's a key line Earline - lino is usually too slippery, the dogs have a sense of sliding paws and do not relax so look shoulders-tense. Textured carpet would be better. Best is rubber matting as dog groomers use on grooming tables, or as PeggySue said, rubber-backed matting works well. It is worth a quick look at a grooming parlour to see the dimensions of tables they use to work on large or small dogs, and the good grip/easy clean combination surface.

And yes best luck with it, be good to see some of your shots and to know what camera/lighting you are using.