0 used to describe a situation in which people will do anything to be successful, even if what they do harms other people:
It's a dog-eat-dog world out there.
Several of the organic cotton farmers explained that their cooperative efforts involve less dog-eat-dog competition than those of conventional farmers.
The world of the inter-war period was a dog-eat-dog affair.
It's a dog-eat-dog world at each of the three 'extremities' of the diagram.
Local authorities should not indulge in a dog-eat-dog attitude.
That creates a dog-eat-dog situation in the housing queue.
Our intention is definitely not to reinvent the dog-eat-dog competition that prevailed under the previous internal market.
The introduction of a market-driven system in further education has led to a dog-eat-dog approach which is setting colleges against each other.
The debate at times denegrated into a dog-eat-dog argument.