These animals should be housed alone, because they are highly territorial.

The species has a highly territorial social structure and has no fear of humans.

Brown bears normally occur over vast home ranges, however they are not highly territorial.

The male is highly territorial, and difficult to approach.

This owl is resident through the year, and highly territorial.

The pair is highly territorial during the breeding season.

Scrabs are highly territorial and chase any other life form on sight.

Adults are highly territorial and usually live in pairs.

This species is highly territorial and will chase butterflies that move into its territory.

Pairs are highly territorial and both members will defend their territory from other rats.