Soaring metabolic rates place sea otter moms at risk

The idyllic sight of a sea otter mum with a pup clasped to her chest, basking in the peaceful waters of Monterey Bay suckling her youngster can conceal the true extent of her devotion. Lactation is one of the most demanding ...

Shark with lowest-known metabolism is a sluggish success

A new research paper from Mote Marine Laboratory reveals that nurse sharks have the lowest metabolic rate measured in any shark—new evidence of the sluggish lifestyle that has helped the species survive for millennia.

You need this hole in the head—to be smart

University of Adelaide researchers have shown that intelligence in animal species can be estimated by the size of the holes in the skull through which the arteries pass.

Seminal plugs cost red-sided garter snakes dearly

Bubbling out of their hibernation burrows as the temperature begins to rise, male red-sided garter snakes only have one thing on their mind: mating. And with females in short supply, the pressure is on. But how much effort ...

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