I don't think I could pick or vote, had Dogs and cats most of my life. Both brought many happy memories and laughs inc some not so funny moments when my old dog ran into a newly installed double glazing back door (he was fine though after). 

Are we doing that thing where we take a negative trait that some animals display and then apply that to all members of the species and act like they all do it?
Fact. Cats are cuter by a factor of 1x10^dawwwwww. In addition...
They purr, which gives off these amazing vibrations and is very enjoyable.
They can fit neatly into your trousers if you need them to.
They have rough tongues.
If you aren't in the mood, they will sod off and do their own thing.
They are perfect size for sitting on laps.
They eat less and poo less.
They can be trained to poo like humans.
Don't eat or roll in every excreted substance they find.
Like to rub themselves against you.
Keep your bed warm without turning the heating on.
I could go on.
You don't touch Kitty in his special place do you?
Cats leave fur everywhere and destroy your expensive furniture just so they can get a manicure.Dogs leave hair everywhere and chew's through wooden door frames and then the bricks tooHow dumb is that!!!
animals are only cute when they're baby animals, there are no cute adult animals.
cats are cleaner and bury their own poop
but dogs are more fun