Sloth size and habitat shifted multiple times over the past 35 million years, but human hunting likely drove the slower, ...

A second gray whale that died this year from a suspected vessel strike was found in the San Francisco Bay, according to The Marine Mammal Center (TMMC). It is the ...

The wildlife sanctuary doesn't usually reach this milestone until the end of June. There are a number of reasons for the ...

Rasal, one of the oldest harbor seals living under human care, is celebrating her 40th birthday at Norwalk's Maritime Aquarium, where she has lived since 2005.

The genomes of long-living, big-brained mammal species reveal that they carry more copies of immunity genes. Experts ...

A long-awaited upgrade to one of five marine mammal field stations in the state is finally moving forward, promising to ...

An adult female gray whale was spotted off Mare Island in Vallejo. This is at least the seventh dead whale that has washed up along a Bay Area beach this year.

Annabelle Brawdy is living with AGS a rare and potentially life-threatening allergy to red meat and other mammal products caused by a tick bite.

At 8 a.m., with the sun lighting the sky but not yet over the hills, a team of marine mammal rescuers climbed down on to the ...

The tailless tenrec is a hedgehog-like omnivorous mammal native to Madagascar. It holds the record for the largest litter ...