Posted on

Poisonous Rats!

Large, poisonous rats roam the Earth. It sounds like a post-apocalyptic scene from a B movie, but it’s not. Jonathan Kingdon, who mammalogists will know as the author of the The Kingdon Pocket Guide to African Mammalsand many other books on African mammals, and his colleagues discovered one of the most interesting and unusual behaviors in mammals.

Continue reading Poisonous Rats!

Posted on

The Evolution of River Dolphins

You may have heard of freshwater sharks, but what about freshwater cetaceans? Pods of gregarious white belugas leave the ocean and move up large rivers (e.g. St. Lawrence River) in the summer months to feed on fish and benthic invertebrates. However, these beautiful whales are only temporary visitors to riverine environments. River dolphins are the true freshwater cetaceans.

Continue reading The Evolution of River Dolphins