Sir Paul McCartney has joined PETA and 778,000 animal advocates who have signed a Change petition in calling on Texas A&M University to stop performing painful muscular dystrophy research on Golden Retrievers.

The former Beatle and animal advocate learned of the abuse after performing In Texas last month and responded by drafting a letter asking A&M's President Michael K. Young to stop the research and adopt the dogs to loving homes. Within the letter McCartney states,

"When I was on tour in Texas this month, I was shocked to learn about muscular dystrophy experiments on dogs at TAMU's campus... Please do the right thing by ending the suffering of dogs in TAMU's muscular dystrophy laboratory and switching to modern research methods instead."

If you would like to read the entirety of the letter click here.