If a Dog personality and a Hippo personality find themselves together they might want to reconsider. This relationship could have some bright spots, but they're probably not worth dealing with everything else.
A ridiculous union
Not your style
Once you've taken the personality test, choose two animal personalities from the dropdown lists below and click "Make a Match" to see how compatible they are. You can read more about how different animals get along at Relationships Between Animal Personalities.