What consumer feeds on secondary consumer?

Feeding on Secondary Consumers in an ecosystem will cause for you to be classified as a Tertiary Consumer (also known as a 3rd order consumer), and will be, by necessity, a carnivore.Another way to...

examples of the primary consumers are the rats and examples of secondary consumers are snakes eating the rats

Yes - this would be a tertiary consumer. Anything that does not create its own food is a consumer.

A primary consumer obtains its energy from producers (i.e. plants). Therefore a rabbit is a primary consumer because it eats grass and other plants. A secondary consumer eats primary consumers,...

A secondary consumer is an animal that eats primary consumers, which is an animal that eats producers For example, birds (secondary) eat bugs (primary), which in turn eat plants (producer)