Veterinary questions? Ask a Vet for Answers ASAP
Good afternoon, I am Laura, one of the UK vets.
Was it a dead mouse or rat that she found, or did she catch it?
She must be quick!
There should be no problems with her eating something she has caught. There are some species of tapeworm that can be transferred between rodents and dogs when they are eaten, so I would give her a wormer that does tapeworm in a week or so.
If it is only the one rodent the chances or secondary poisoning from rat bait are very low. Is she was eating lots of rats and mice, then I would say to get her checked out, but if she has only eaten one she should be safe.
Most of the rat poisons used today cause problems with blood clotting. If she had taken a large dose directly, in a few days to a week we might see signs of bleeding - tiny red spots on her gums or lots of bruising on her skin, or swellings where she bumps into things.
I would leave her be, sometiems you can cause mroe harm trying to make them sick. I think she will be ok.
You are very welcome.