In the Miaverse, stuffies can have abnormal genetic differences. This allows two bears to biologically produce a turtle.
- Big Bobby and Chestnut Fuzzingsburgue, both bears, have a biological son who is a turtle (Turdsley Fuzzingsburgue).
- Buck and Karen Snortleson, both apes, have a biological daughter who is a monkey (Jasmine Snortleson).
- King/Judge Milo and his wife have multiple children who are many different species.