Dog eat dog know that when people say this it's usually said very fast and sounds like Doggy Dog.
It's really a dog eat dog world.
Definition ruthless competitive and fast paced.
Everyone is out for themselves.
Example Number one tim works in a dog eat dog field.
Meaning his field is very competitive.
Example Number two.
Tara is used to the country life and she can't get used to this dog eat dog life in the city meaning
she doesn't like the fast paced life of the city.