White fuzzy terrier with very big ears looks directly into camera.

A dog is supposed to be man's best friend, but you wouldn't wish this pooch on your worst enemy.

The dog's owner, a paralyzed man in Trumann, Ark., recently adopted the "small white fluffy" stray in hopes of having a loving animal companion, according to KAIT8.com.

Instead, the dog had to be euthanized after it bit off one of the man's testicles while he was asleep on Monday morning.

The man, who told police he has no feeling from the waist down, woke up with a "burning pain" in his mid-section.

He looked down and found his newly adopted dog between his legs, according to KAIT8.com.

The 39-year-old victim told police he sleeps in the nude and noticed his dog had blood on its feet and muzzle.

That's when he also realized that the dog had eaten one of his testicles, WMC-TV reported.

The man was taken to an area hospital to be treated for his injuries, according to a police report obtained by The Huffington Post.

The dog, which had been adopted by the man three weeks earlier, was euthanized with its remains tested for rabies by a local veterinarian.

As unusual as this story is, it's not the only gonad-related incident that has occurred in recent months.

In April, a shopkeeper in the Chinese city of Haikou reportedly died of shock after having his family jewels locked in a vice-like grip by an irate woman.

In March, suspected Florida escort Priscilla Vaughn was arrested after allegedly eviscerating the testicles and biting the penis of a male client.