アネモネ

Sharp-tongued? Cheeky? Pompous?
Surprisingly caring and the family's conscience?!

Poodle owned by the refined older sister. A dog with a pompous and cheeky attitude. However, she's not malicious at heart. Her owned, the protagonist's sister, pampered her and spent so much money raising her that it's impacted her behaviour, as well as her perspective on finances.
In actuality, she is smart and logical, so she and the protagonist can easily get on the same wavelength.
She always makes pompous and highfalutin comments, but she just wants attention. It actually makes her heart throb when she gets scolded.

"I'm letting you brush my fur, you know. You should be more grateful."