Because a frightened, defensive cat shows extreme pupil expansion, an opposite signal seems to have evolved for its dominant, aggressive and fearless rival.

When their property was threatened by an aggressive rival, they would 163 either wake up to reality or be wiped out.

That is especially true when a dominant player in a market fails to react to change, allowing new and aggressive rivals to innovate with products or pricing.

How does it hold up against its younger, more aggressive rivals?

Since Lin has major cellular operations in those cities, it would have faced an even more aggressive rival.

A well-known example involves a chimpanzee that was approached from behind by a loud aggressive rival.

Mr. Scherrer said his decision had been prompted by a desire to compete internationally with his aggressive rivals.

Within weeks of his inauguration Donough discovered he had an aggressive new rival.

For the first time since Trafalgar, Britain had an aggressive and truly dangerous rival to worry about.

Race a field of five other aggressive rivals.