<ref name=Harris>[http://www.effem-equine.com/Waltham%20-%20Horse/behavioural_aspects/the_natural_horse.html "The Natural Horse and Unnatural Behaviour."] {{Webarchive|url=https://web.archive.org/web/20120308000149/http://www.effem-equine.com/Waltham%20-%20Horse/behavioural_aspects/the_natural_horse.html |date= 8. marts 2012 }} Reproduced with permission from ''the Proceedings of the BEVA Specialist Days on Behaviour and Nutrition.'' by P.A.Harris et al. (editor), ''Equine Veterinary Journal Ltd.'' Hentet 22. juni 2007.</ref>
}}
== Se også ==
* [[Krybbebidning]]
* [[Koldblod]]
* [[Varmblod]]
* [[Liste over hesteracer]]
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