So my fix for the dog and sofa (and kids) situation is to buy a high-quality used sofa and not feel that bad when it gets wrecked. Like $200 or less. Look for Crate and Barrel, Ethan Allen, Henredon, etc. etc. Basically anything that suits your taste. The frames and cushions will still be good and when it gets gross you can just trash it after a few years.

Alternatively, look for new sofas from those companies or similar. Lee Industries, Mitchell Gold, etc. all very good. Will cost you $3000+ for a high quality well-constructed sofa. Go for down or down blend cushions. Try to pick a sofa with removable cushion covers, with matching fabric on both sides, and washable. Look at the rub test value and look for one with a very high rating (50,000 or whatever)

Blankets or covers will also help.