Dogs and horses are a family choice - who ever decided they were a good idea looks after them.
That said, any one working F/T with a P/T partner should reasonably expect the majoprity of the house hold chores to be done.
However that does not preclude acting like an adult, finding the laundry basket, putting caps on tooth paste, and other such common courtesys.
FWIW - oh Im such a 1950's HW, but when I took a career break to be home, I did 99% - that was our choice, I ran a house and family to enable DH to earn to capacity. However, as an aside to that, he did all child care/clubs/footy at weekends.
Now I'm back at work we are probably on a 40/60 split - I do every thing weekdays simply because I am home at 4pm, he is home at 7pm. Weekends we fairly split stuff, Dh usually cooks, I iron.
When I do nights, rare, maybe 4 times a year, I prep meals, he cooks and serves.
I really do not subscribe to the thought process of 50/50 when one is working their bollocks off to provide for a family.