| Answer | Crossword Clue |
|---|---|
| RHINO | Massive mammal |
| ELEPHANT | Massive mammal |
| MASTODON | Prehistoric massive mammal |
| MASTODON | Massive extinct mammal |
| RHINO | Massive mammal, for short |
| hippopotami | A large thick-skinned semiaquatic African mammal, with massive jaws and large tusks |
| hippopotamus | A large thick-skinned semiaquatic African mammal, with massive jaws and large tusks |
| hippopotamuses | A large thick-skinned semiaquatic African mammal, with massive jaws and large tusks |
