Hi,
Pet fees are a relatively new feature/fee structure, and many hosts are having issues correctly inputting values so guests are charged correctly for their pet stay, this may be the case. .
Graciously ask in writing, again, for clarity pets fee. Is it 2 dogs for $125, $250 or $375? As it seems like it is $375, based upon your message. Let’s hope it is a simple mistake, and you can come to an agreement with the host. You may also want to ask if there are restrictions, ie…are pets not allowed on the beds, furniture, etc…
If you are uncomfortable with the final amount the host confirms, call airbnb customer service for support.