Avian influenza has spread far beyond the nation's birds, infecting all manner of creatures from zoo animals, wild mammals, ...

A big cat sanctuary in Washington has suffered "significant losses" among the animals in its care after what it said was an ...

A new mutation and the first severe case of H5N1 bird flu discovered in a human in Louisiana has raised concern among some ...

The virus has spread among dairy cattle, humans and other mammals. But officials say the current public health risk is low.

Twenty big cats have died after contracting bird flu at a Washington State animal sanctuary. The Wild Felid Advocacy Center ...

An animal shelter in Shelton, Washington is grappling with a devastating bird flu outbreak that killed 20 of its big cats ...

Humans aren't alone when it comes to yawning — all vertebrates do it. But why? An expert explains the likely reason behind ...

Genetic analysis suggests the bird flu virus has the capacity to mutate in ways that could make it more transmissible to ...

Nearly two dozen big cats died after bird flu swept through the sanctuary where they lived. The Wild Felid Advocacy Center ...

A genetic analysis of viral samples from a patient in Louisiana hospitalized with the first severe case of bird flu showed ...