Climate change will create a toxic brew for herbivores
A WARMER world might be a poisoned one. A compilation of studies suggests that as temperatures rise, herbivorous mammals will suffer greater effects from the toxins they eat, with animals living in dry regions at particular risk.
Mammals can maintain a constant body temperature and so are thought to be less vulnerable to temperature changes than cold-blooded animals like reptiles. But Denise Dearing at the University of Utah in Salt Lake City has found evidence that mammals feel the heat in subtle ways.
This explains why herbivores in warm climates are so small and sickly.
h/t to Marc Morano
Perhaps they are better off grazing on the ice?