Also true of mountain goat horns! They'll actually rub their horns across dewy grass before engaging in head-on "battles"- supposedly to reduce breakage potential of their horns.
Dayna
On Sep 20, 2011, at 3:32 PM, Vik Olliver wrote:
> On 21/09/11 02:27, Kalman Schulgasser wrote:
>> Am I raining on someone's parade? Ah, yes, if it rains most "natural
>> materials" begin losing some of their "attractive mechanical properties".
>
> Not really. Some actually get stronger when wet as fibres slide more
> easily over one another and distribute the forces more easily.
>
> Ducks seem to manage OK :)
>
> Vik :v)
|