If someone has a price of $50 per night for housesitting. Is it $100 is there are two dogs?
It depends on the sitter. Look at the sitter's rate table under "Additional Services & Rates." There you will see if the sitter offers a discounted rate for additional dogs. Some do; others do not. Sitters set their own rates on Rover, so it is going to vary widely.
Look through the profiles carefully to find ones who meet your needs. Then schedule a Meet & Greet to have them come over and discuss your expectations and how the sitter plans to fulfill. There are lots of questions to ask about how a sitter house sits, especially what hours will they be at your home and what is included.
Good luck
I would suggest asking the sitter when you reach out for a possible booking. Some do list “additional dog” in the additional services drop down and some do not. Do not automatically assume that if they do not list fees for additional pets that the per night rate is it.