Rats drive out all other rodents. Even moles. I can judge how under control I have them by the rodents I see. I have a ton of moles right now so Im actually happy about the hills all over the yard. Those are townsend moles I think. We also have shrew moles.
I even saw a townsend vole the other day. They are slow enough even my fat rear can run them down over grass and catch them. The dogs and cats love those for eating and go nuts if they see one.
Cats have been catching a lot of shrews lately. They like to eat the heads off them. I toss the rest to the chickens.
I know we have pacific jumping mice as the cats have gotten a couple in the last 8 years.
I like rodent diversity since it means the rats are gone. Of the natives, only the shrews get in the house.
We had another bat in the house on Sunday. We cannot figure out where they are getting into the house. They should be hibernating for goodness sake! We are going to have a thaw this weekend, I guess I will need to see if I can find where they are getting into the house.