Indeed all sorts of things are off... I have to assume that ferrets are at least as much fun as cats... And then to claim the cats and dogs (and most other animals) are on the same line of effort vs fun?
Cats are waay less effort than dogs, do you have to walk your cat every day? No.
You feed cats, let them in and out to poop, what else is there to do?
Dogs, dogs are great, but they're needy, they want constant attention, know how to whine, bark, beg, eat lots more. Dogs are waay more effort than cats.
This chart should be titled "Chart with multiple things wrong with it"... Then to claim it's official on top of all this.
Right? Cats are very low effort. They can basically live on their own and have a good habit of staying clean and only pooping in the litterbox. Chances are they'll either be sleeping or lazing around the house. Putting them next to dogs which need WAY more attention is off.