Texan Christy Kroboth used to have a quiet job in a dentist's surgery. Now she spends her time jumping on animals many times her size - and taping their jaws tightly shut.

Cincinnati Zoo's premature baby hippo Fiona needed urgent treatment for dehydration.

Seven new species of night frog have been discovered in India, including four miniature forms.

Up to 16% of hydraulically fractured oil and gas wells spill liquids each year, according to new data.