where was the video taken? The animals are Asian house shrews (aka musk shrews), not rats. Although they are the size of small rats.
Giant python regurgitating a monitor lizard:14-foot python regurgitates lizard in horrifying footage | Daily Mail Online
Crocodiles and sharks sharing a whale carcass:Tiger sharks and crocodile share a rare meal together; video | GrindTV.com
Here's a very interesting sequence of photographs, showing a pair of yellow-throated martens attacking and killing a rhesus macaque in India: Chris Mills