Best Waterproof Orthopedic Bed for Senior Collie

A 14-year-old Collie with nighttime incontinence needs something very specific — proper orthopedic support for aging joints, and genuine waterproofing that goes beyond a removable cover. Most beds marketed as 'waterproof' only have a water-resistant outer; once a dog is leaking regularly at night, that's not enough. Can you tell me roughly how much your Collie weighs, whether they tend to curl up or stretch out when sleeping, and how bad the incontinence is — occasional dribble or fairly regular soaking?

That's really helpful. So you need three things working together: a wide enough surface for a fully stretched Collie, genuine waterproofing at the foam level not just the cover, and memory foam or solid orthopedic foam that actually relieves pressure on arthritic hips. A lot of beds fail on at least one of those. What's your rough budget, and does she currently sleep in a crate or free in a room?

In that case I'd go with the PetFusion Ultimate Dog Bed in the Large size (90 x 70cm). Here's why it works for your specific situation: the foam core is a 10cm solid memory foam base — not shredded foam, which compresses and stops supporting arthritic joints within weeks. Critically, it has a waterproof internal liner that wraps the foam itself, so even if liquid gets through the outer cover, the foam stays protected and odour-free. The outer cover is machine washable and comes off easily with a zip. For a 22kg Collie who stretches out, the large gives her enough room. The foam density is genuinely good for hip pressure relief — this isn't a budget bed dressed up as orthopedic. You'll likely be washing the cover two or three times a week, and it holds up to that. It's around £80–100 on Amazon UK depending on when you look, which for a dog with these needs and the washing cycle you're facing, is worth it over a cheaper option you'll replace.

The internal waterproof liner on the PetFusion is fixed around the foam rather than a separate removable layer — but that's actually intentional and works in your favour. Because it's sealed around the foam, liquid can't creep underneath it. You wash the outer cover regularly, and the liner protects the foam long-term. If the liner itself ever gets soiled from a very heavy leak, you can wipe it down directly. In practice for most owners in your situation, washing the outer cover every few days handles it fine. If you want belt-and-braces protection, you can also lay a washable waterproof pad on top of the bed itself — something like the Bulldogology waterproof pee pads — which gives you an extra layer to swap out on bad nights without needing to strip the whole bed.

Good choice for her situation. One last tip: when it arrives, let the foam fully expand for 24–48 hours before she uses it — it's compressed in shipping and needs time to reach full thickness, which matters for the hip support. I hope she gets many comfortable nights on it.