I didn't list our cats and got our goods to follow lists stamped last weekend sooooo hopefully they don't need to be there! It shouldn't hurt to add your dogs just to be safe though. I considered it, but our while our cats are adorable, they're total pains in the rear so we'd probably have given them negative values lol
On a more serious note, I used 15miles.info a LOT to guide our process and they had pets but didn't mention declaring them on the goods to follow/landing info page. So hopefully that's another sign it's fine.