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Scientists are deep-freezing koala eggs and sperm to protect the species from extinctionResearchers at the University of Queensland in Australia want to freeze koala sex cells in liquid nitrogen, which could preserve the DNA for decades until we need it, an expert said.
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Outdoor cats can be exposed to dangerous germs — here's how to protect you and your pets, according to more than 400 studiesOpinion Ecologists and a veterinarian looked at more than 400 studies to see how to stop cats from bringing home unwelcome pathogens.
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Watch bison herd defend a newborn calf from wolf attack in a primeval Polish forestResearchers have captured first-of-its-kind footage of a wolf attack on European bison in the Bialowieza Primeval Forest. The recording shifts our understanding of predator-prey interactions in this region.
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Elusive dwarf fox, feared extinct, photographed for the first time on island off YucatánThe first-ever photos of a Cozumel fox prove that the mysterious island predator is still alive in Mexico but in dire need of conservation, according to researchers.
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World's rarest great ape decimated by 4 days of extreme rain, with 7% of population lost to cycloneAround 58 of Indonesia's Tapanuli orangutans were crushed or buried alive by landslides brought on by the climate-change-fueled Cyclone Senyar.
2 Commentsprimates -
More polar bears are approaching human sites as the climate warms, and it's not just the skinny onesOpinion It's not just thinner bears that are coming ashore as the climate warms.
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Are we more closely related to cats or dogs?The answer of whether humans are more closely related to cats or dogs depends on how you look at the question.
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What's the difference between a lion and a tiger?One has stripes, and one doesn't. But do the differences between lions and tigers go deeper than that?
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Why do cats and dogs shake their heads?Life's Little Mysteries Cats often flick their heads back and forth as if they've been possessed. This strange reflex has a simple explanation.
2 CommentsLife's Little Mysteries
