COEUR d’ALENE — Even an ice age has no chance against a warm heart.

Residents of a Coeur d’Alene neighborhood spotted a polar bear and a triceratops clearing sidewalks with a snowblower on Thursday.

There was just one person behind the act: Annie Williamson, who cleared one side of the street in an inflatable costume, then switched to another costume before tackling the other side.

She cleared 21 houses in total — and would’ve done more if she didn’t have to pick up her kids.

“I thought it would be fun,” Williamson said. “With everything going on right now, we need a laugh.”

Williamson grew up watching her dad, a lifelong Idaho resident, clear snow for his neighbors. When she got her own house, she did the same.

Her dad passed away last April — but his legacy lives on.

Some of Williamson’s neighbors are seniors. Others don’t have time to clear the freshly fallen snow before they leave for work and come home after dark. That’s where Williamson came in.

“We’re all in this together,” she said.

A single mom of three, Williamson works from home in order to educate and care for her daughter, who has special needs. Because she’s home so often, she has her finger on the pulse of the neighborhood. She knows whose sidewalk needs clearing or whose car needs digging out.

“I’m kind of the neighborhood mom,” she said with a laugh.

She wants to set an example for her kids, like her dad did when she was growing up. There are many ways to make a difference in another person’s life.

“I don’t have a lot of money to give,” she said. “But I can give my time. I can give my energy. I can give a helping hand.”

Williamson said she didn’t do all that hard work with the expectation of thanks. She didn’t even intend for her neighbors to know it was her — hence the costumes — though one sussed out her identity.

"Dino and polar bear snowblow 21 houses’ sidewalks on Apperson Drive in Coeur d’Alene," neighbor Anne Capellen wrote to Press editor Mike Patrick with two videos attached. "Fun to have a great neighbor like that!"

Williamson took the praise in dino-stride.

“It’s about taking care of each other,” she said.

That’s the message she hopes to teach her children. She said she also hopes that recent transplants to North Idaho embrace that lifestyle — one in which neighbors look out for one another, without having to be asked.

“That’s how Coeur d’Alene has always been,” she said. “When someone’s down, we’re there to pick them up.”