Sean Halvorsen did not expect to share his home with a raccoon.

A month ago, his son saw a raccoon on their house.

The cat was scared, and the son saw the raccoon on the roof.

This was the start of a raccoon problem.

Raccoons are not often seen in Alberta due to harsh winters and many predators. They like to stay in forests and green spaces in Calgary.

There are raccoons in Calgary.

After a neighbor saw a raccoon, Halvorsen took action.

He heard noises in the roof and knew he had a raccoon problem.

Halvorsen did not want a raccoon in his home.

He thought of using bear spray but decided to call for help.

A pest control company removed the raccoon without harm.

The raccoon is gone, and it was worth the cost.

The company also checked the house for other entry points.

Peregrine General Pest Control has had more raccoon calls this year.

In 2017, the company had only one or two raccoon calls per year.

Warmer winters have led to more raccoon calls.

Raccoon calls have increased by at least 10 percent each year.

The company has learned to handle raccoons over the years.

They use male raccoon urine to get female raccoons to leave.

Male raccoons can kill a female's babies to mate.

Do not feed raccoons.

The company uses one-way doors and live traps to remove raccoons.

Relocating raccoons can be bad for them.

The company tries not to kill raccoons.

They want raccoons to go back to their natural homes.

Halvorsen and his neighbors have seen raccoons before.

Raccoons opened a container with their paws.

Raccoons are found in every Canadian province except one.

Raccoons have traditionally lived in Alberta's southeast region.

Raccoons have expanded their range in Alberta.

A raccoon was caught and killed in Banff.

Raccoon numbers are rising in Calgary.

Data shows that raccoons are becoming more common in Calgary.

Wildlife biologist Sara Jordan-McLachlan says raccoons have been in Calgary for about 30 years.

Milder winters have helped raccoons adapt to Calgary.

Raccoon numbers in Calgary may be increasing.

A raccoon sighting in Calgary raised questions about the population.

Raccoons in Calgary are mostly found in natural areas.

Their range expansion is similar to that of other wildlife.

Raccoons may be becoming more established in Calgary.

Raccoons face challenges in Calgary, including competition from coyotes and bobcats.

Raccoons also face challenges from human behavior.

If humans leave food out, raccoons will take advantage of it.