Reading Comprehension 2

At the Zoo 

By William Makepeace Thackeray 

First, I saw the white bear, then I saw the black;

 Then I saw the camel with a hump upon its back; 

Then I saw the grey wolf, with mutton in his maw; 

Then I saw the wombat waddle in the straw; 

Then I saw the elephant a-waving of his trunk; 

Then I saw the monkeys — mercy, how unpleasantly they smelt!

Question 1: 1. What colors were the two bears?