I actually found the cat troupe to be funnier more consistently, but I agree the character relationships are too dysfunctional and so on a whole I prefer the dog troupe characters. Even the volumes after the anime ends are a great improvement on this front, in that I genuinely thought the anime had skipped some stuff about Higashida and Hana because there's no way they'd fall in love with each other that suddenly.
But no, the anime is pretty much a 1:1 of the manga(minus a few characters like the maid). Including the sudden 6 month timeskip right after Hana decides to grow out her hair.
The later volumes were written after she'd already started writing the dog troupe series, so she does seem to have a soft spot for the characters in this one, since she keeps going back to them. There's also a joke in the supplemental material(she draws a lot of stuff about working!!!, to the point it's hard to keep track) where she flash-forwards to Higashida and Hana married happily(?) randomly for a few punchlines. In the later volumes, all the couples have already settled and it's basically about them being lovey-dovey.