Twenty big cats, including a half-Bengal tiger and four cougars, died between late November and mid-December at a sanctuary in Washington State after becoming infected with bird flu, according to the facility’s director.

A wildlife sanctuary in Washington announced it is going into quarantine until further notice after 20 big cats died due to bird flu infections. The Wild Felid Advocacy Center in Shelton, Washington,

The animals - including a Bengal tiger, cougars and bobcats - have died of the virus over the past several weeks.