Good dog

I want a dog thats easy to groom and is small
I also want it to be playful and be very easy to train
I also want it to be good with cats do you know a breed that falls under most of my categories?

Chihuahua.
Or adopt a mixed breed from the shelter.
Mixed breeds are smarter than pure breeds.

chihuahua, papillon, yorkie..., maltese, dashund!

Jack Russel Terrier

I have a chuihuahua and hes the best hes very hyper ,funny , and I dont even have to brush him but he was hard to train he noes tricks which he learned fast but he isnt fully potty trained .

I think if your looking for a dog like that
one breed super-cute and very playful - teacup yorkie.

(:

Bischon