Two foam sofa seat cushions (Perivale W13)

These fit cushion covers 72 cm deep x 80 cm wide x 12 cm thick, or less of cut to size. They are from a flame retardent 15-years old sofa. They have wadding bonded to the top bottom and front and a mesh cover. Suitable dog bed or as replacement for damaged seat cushion(s)? They have been kept clean and stain/insect free. We've replaced them with a firmer foam, which we prefer.