After he did the action?

After mounting and dismounting my female rat my male rat started licking his bits, then he run away leaving this hard bone resembling thing.. I have tried to google it but have no track to describe it.. Is this normal?
Answers:    Yes, don't worry, this is perfectly everyday. It's called a mucus plug, it means she has markedly gotten pregnant. Congratulations!! She will be pregnant for approx. 20-23 days.

Good luck when the new kits arrive!
no it's not,go to the vet!
back me next!thank you!
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