If you're looking for manga similar to Penta no Koto, you might like these titles.
A full-color love letter to the always cute, sometimes exasperating, and honestly just plain weird behavior of cats. Favoring a cheap scratching pad over a luxurious cat tower, lending their “help” when it’s time to fold laundry (by sitting on it), and zooming around the house at odd times for no reason…
After mourning the loss of her beloved feline companion Suu, manga artist and cat mom Chie Shinkyu decides to turn over a new leaf and find herself a new baby to love! Following a tip from her brother-in-law, Chie picks up the stray she calls "Sen" and takes him home with her. Surely nothing's going to go wrong... right?