The main character uses his senses to describe his environment, including the other canine family members and people. How are his siblings introduced? Give Specific examples of the language that he used.

The language is descriptive. The author uses olifactory and other sensory descriptions.

One day it occurred to me that the warm, squeaky, smelly things squirming around next to me were my brothers and sister. I was very disappointed.

Greedy:

Often finding a place to suckle meant pushing aside what I now knew was the snout of a sibling seeking to crowd me out of my share, which was really irritating.

Nicknames:

Gradually, the other dogs came into focus, and I grudgingly accepted their presence in the nest. My nose soon told me I had one sister and two brothers. Sister was only slightly less interested in wresting with me than my brothers, one of whom I thought of as Fast, because he somehow always moved more quickly than I could. The other one I mentally called Hungry, because he whimpered whenever Mother was gone and would suckle her with an odd desperation, as if it were never enough. Hungry slept more than my siblings and I did, so we often jumped on him and chewed on his face.