The next morning she found a brown rat struggling in it.

Gessner was the first to describe the brown rat in Europe.

It was the brown rat from the trap in the storeroom.

But say you use brown rats from the sewers instead.

The brown rat is kept as a pet in many parts of the world.

Also present was a nurse with the head of a great brown rat.

There was a brown rat beneath it, lying on its side.

The blackbuck and brown rat are given some screen time too.

The brown rat and house mouse are both used as medical subjects.

However, in this regard, it is the brown rat that has become most abundant.

A sewer rat does better than this to protect her offspring.

"She was shot to death and lay in the gutter for five hours, being chewed by sewer rats."

But the way you smell could turn the stomach of a sewer rat.

It was said that, at times, some of the sewer rats pitted against him were his equal in size.

They'd have to do it the hard way, hunt them down through the night like the huge cunning sewer rats they were.

Home, sweet home, especially if you happen to be a sewer rat.

"Out here you kick every barrel, because it's full of sewer rats."

The pair of gray sewer rats had rolled on their backs.

He was smarter than the average sewer rat and twice as ruthless.

In fact, it is unusual to find Norway rats above the first floor.

The main conservation issue is the large population of Norway rats on the island.

Norway rats were accidentally introduced to the island in the 1980s.

Norway rats are born after a gestation of only 22 days.

It is one of the largest islands from which Norway rats have been eradicated.

Despite this, this species' common name of "Norway rat" is still in use today.

The mammalogists noted that they did not find any Norway rats or house mice.

His hair was about the color of a Norway rat and parted just above his left ear.

Not when the flourishing species is the Norway rat.

The subject of his thesis was the 24-hour rhythms of the Norway rat.