How To Introduce Pet Mice

Step-by-step guide on introducing new pet mice to an existing group

1. Ensure new mice are quarantined for two weeks prior to introductions to ensure no illness.

2. Dab a tiny amount of vanilla essence at base of each mouse tail (not essential but helps for them to all smell similar).

3. Always use a neutral space for introductions to prevent territorial behaviours.

4. Normal mouse behaviours would include sniffing, some chasing, humping, squeaking.

5. Remove mice immediately if blood is drawn, consistent tail wagging, repeated chasing/mouse being singled out - they may not be compatible or you have rushed introductions.

6. If all fine, leave in neutral space for an hour or so.

7. Next move mice into a smaller neutral space such as a glass tank/carrier & observe for another hour. If all is well, such as mice snuggled up together/no chasing/consistent squeaking move to step 8.

8. Place mice in another neutral space without toys/wheels. Use multiple water bowls so dominance cannot occur over one item. Empty toilet/kitchen rolls can be added although always ensure these are open at both ends to prevent any mouse from being cornered without an escape route.

9. Observe again over several hours. I use a camera linked to my phone for overnight in the event of any major squabbles.

10. Over the course of a few months, slowly add toys/enrichment/hammocks/ropes - do not add all at once otherwise mice may fight for territory & you will have to start process from the beginning.

    GOOD LUCK! Please note, some mice may not naturally bond despite doing everything correctly. You can try again in a few months but if still not successful, then keep them in their own groups.