A South Florida family was mourning the loss of their dog Friday, but experts say they could’ve died too if the bees would have attacked them.

Brenda Williams doesn’t have children, just two dogs.

“I talk about my dog everyday, everyday, and now this,” Williams told CBS4’s Gio Benitez.

But Friday, one of them lay dead in her front yard. Africanized bees living deep inside a tree in her backyard attacked the dog just before noon.

“I had everything done to him, and now I have to see my dog get taken out by bees? It’s unbelievable,” said Williams. “The bees gone wild! They really went on attack. Me, my husband, the dogs, everybody,” she said.

Her husband, George, was cutting the trees. The sound of the chainsaw apparently made the bees aggressive, and in just a few minutes, he was on the run.

“They bit me everywhere. I got bites all over the place, I had to strip naked, the bees were all over me,” said George.

But the killer bees completely covered the dog’s head, and killed it.

“I couldn’t just run out there like I’m Superman, I might have been like my dog or in the hospital,” said Williams.

And she worries others in the neighborhood could have been hurt if she hadn’t called expert bee remover Adrian Valero, who says he only sees Africanized bees once every three or four months.

The bees are rare, but even so, Valero says 60,000 of them were living inside the Williams tree, and he couldn’t kill all of them.

For Brenda Williams, those are just numbers. What she cares about is lying lifeless in her front yard.

“This is the worst day. I’ve had some bad days, but this day here takes the cake. It’s the worst day of my life,” she said.

So what if this happens to you? Experts say, don’t swat at the bees, because if you do, that’ll make them even angrier.