University of Utah lab experiments found that when temperatures get warmer, woodrats suffer a reduced ability to live on their normal diet of toxic creosote – suggesting that global warming may hurt plant-eating animals."This study adds to our understanding of how climate change may affect mammals, in that their ability to consume dietary toxins is impaired by warmer temperatures," says biologist Denise Dearing, senior author of the research published online Jan. 13 in the British journal Proceedings of the Royal Society B.