It's a cat owner's blog and it's pretty cool. (That's not exaggeration, by the way. It's not blog-like or something like that, but an animated adaptation of someone's blog.)
It's just stories about someone's cats, obviously, but they're fun and you get to know their personalities. The first few episodes don't have that so much, because the narrator's still introducing herself and her pets. She's a soft touch for felines, tending to rescue strays, ugly ones and abandoned pets that are likely to die. (The last episode is a childhood flashback to a time when she and her younger sister brought back five kittens. They decide they can't tell either of their parents, which doesn't surprise me at all.)
The narrator's likeable and doesn't try to hide anything. "Back then I was quite the heavy drinker." She has no partner and no children. One day she'll get old and be the Crazy Cat Lady at the end of the street, but a nice one. However she'll also do super-identifiable things, e.g. seeing two cats curled up together in a cute way and immediately running off for a camera.
I think the first episode that made me laugh was ep.4. At this stage we've seen her acquire two cats:
(a) an old, ugly one with a slightly mean streak
(b) a kitten that she found blind and discarded in the street, covered in gunk and with its umbilical cord still attached. The vet had recommended it be put to sleep. It's fine now, though.
Anyway, Grumpy likes taking away the kitten's toys. We don't see her do anything with them. She's just being mean. The kitten (Poko) decides she can't be having this, so she thinks up a plan. She'll hide her toys! She'll bury them in the sofa! She then gets a bit over-enthusiastic and the narrator catches her burrowing into the cushions with the narrator's property. "What are you doing?"
"It was then that I learned that cats can get flustered as well."
An archeological dig then unearths some surprises.
This is amusing because it's about the cats' quirks and personalities. Cats do their own stuff, like anyone else. Sometimes they're weird, which can be funny and/or charming. (Admittedly one's less amused when they're destroying your new curtains or stealing the dinner of your next door neighbour with a cat phobia, but I'm pretty sure our narrator here is an experienced cat handler who's seen all that too.) There's an episode about Poko's (human) glove, which she carries around until it's so dirty and evil-smelling that even Grumpy won't steal it. Later a third cat arrives, being a tiny black kitten who has a nearly invisible penis and Comedy Hoover Reactions. (Sometimes it's just hard to tell a particular animal's gender. These things happen.)
This is a nifty little show. (It's also Season 2, with the first season having been an 87-episode run in 2009, directed by the mighty Akitaroh Daichi.) It's someone telling you their cat stories, but they're cool ones and you might find yourself going looking for the 2009 episodes too.