More than 86% of fatal dog attacks are done by this kind of dog:

[Loudestlib]

33. It's a good idea for people to get their pets spade or neautered.

It's a bad idea to get your information from a source with a strong bias.

From the study they used, note that they chose not to include this information even though it was in the conclusion:

"This is no evidence that, absent circumstances specifically associated with mating or maternal protectiveness, a dog being
intact should be understood as a cause of aggressive behavior toward human beings."

They also left out the main finding of the study that most of the deaths were from outside dogs not kept as family pets.