Plenty of 9-year-old boys ask for cash for their birthday. Few use the money like Ethan Flint.

The St. Paul, Minn., fourth-grader donated $1,200 to the St. Paul Police Department on Saturday to help outfit the K-9 unit with bulletproof vests, KMSP reported.

“Some dogs have vests and some dogs didn’t and I didn’t think that was fair,” Ethan said.

A bulletproof vest for a police dog can cost about $2,600, according to ABC7.

“Some dogs have vests and some dogs didn’t and I didn’t think that was fair"

- Ethan Flint

“I think it’s outstanding. That a 9-year-old could think of something like that is remarkable,” Sgt. John Linssen told ABC7. “A vest on a human is like a vest on a dog. It covers their body. It protects them from bullets and being stabbed.”

Ethan has been donating his birthday money since he was 4 years old. An animal lover, Ethan has raised money to help the Lake Superior Zoo rebuild after flooding, give giraffes a home at the Como Zoo and help frogs and snakes through the Minnesota Herpetological Society, KMSP reported.

Ethan said he wants to help penguins or turtles next year.

“A lot of talk over the years has been, ‘It’s better to give and have other people benefit from the generosity you have in your family,’” said Jennifer Flint, Ethan's proud mom.