Hello and thank you for asking your question. My name isXXXXX will try to help.
This is a common question but you do not need to be concerned.
The mouse did not ingest enough poison to harm your dog.
That would include if your dog did ingest the affected mouse.
So, you do not need to worry at all.
You can relax and enjoy your evening.
I hope this helps.
If you have additional questions, please reply.