Dale Earnhardt Jr's dog Killer dies of cancer

January 18, 2015, Staff report,

Canine named for his Dale Earnhardt's dog, friends and family mourn loss

If dogs are man's best friend, Dale Earnhardt Jr. lost his best buddy on Sunday. The Hendrick Motorsports driver tweeted that Killer died of cancer.

In March, Dale Jr. tweeted how the dog got its name.

That same week, Dale Jr. and Killer took photos for the 2015 Greg Biffle Foundation calendar. You can see them on the cover and buy the calendar here.

Killer was remembered by several members of the NASCAR community, beginning with Dale Jr.'s sister.