Question

Correlate the first pair and complete the other.

swallowing of the food : Snake : :_________ : squirrel.

Answer 1

The answer of the question is "Swallowing of food : Snake :: Chewing of food : Squirrel .
This is because the question telling the eating habit of snake and then asking about the squirrel . 
The snake don't have the right type of teeth So they mostly swallow their food as the whole of animal or prey or food. While the squirrel first chew the food then swallow it this is why the "Chewing of food will be the answer here"

Answer 2

The correct Answer is :
Gnawing the food ---- Squirrel

Explanation :
Different modes of taking food:
Squirrel has a pair of sharp and long growth teeth.
With the help of these teeth they bite and gnaw the food.