Bull sharks (Carcharhinus leucas) are large, voracious predators. Measuring anywhere from 7 to 11 feet from tail to snout, with dark gray skin and a white underbelly, bull sharks eat everything from fishes and dolphins to other sharks and even the occasional human. It is for that last reason that it takes a lot of gumption to attach electronic tags to wild bull sharks — yet … [Read more...] about Cold-blooded killer: Study finds climate change is driving deadly cold waves, harming wildlife