From level 3 onwards, rhinos can smash rocks, making them indestructible to anything that isn't a wall. Rhinos are extremely useful at any distance in Jungle due to their invincibility, particularly later on when the player is moving especially fast as it can carry the player almost 1000m.
Rhinos with the ending 'ceros' are inconsistently spelt. The only correct example of this is in 'Dhinoceros', with the suffix being spelt correctly with the 'o'. The other two ('Skynocerus' and 'Slimenocerus') are spelt incorrectly with a 'u' in the suffix.
This was corrected in version 1.12.1 on the 14th of November 2017.