I think it was discussed before, but recently I was impressed again by horns of some wild rhinos. Not only much longer than in zoos, but also different shape - narrow and pointed. Zoo rhinos have more like thick stumps. https://lh4.googleusercontent.com/p...8JUS6Si_4AH3vrHXV94MwUTaqW-9gsBPXnoD1Np-w6b1B Given that zoos are after making their exhibits impressive, why don't they care about rhino horns? I had an idea that different horn shape can be related to wild rhinos wearing their horns on softer materials (shrubs and grasses vs. walls and metal). In this case, zoos might quite easily provide rhinos bunches of branches or similar to wear their horns. Interestingly, which rhino in human care has the longest horn?