Based on my point of view I would think of it as Kevin showing his compassion for his father, or trying to show a link for family care. 
And no, I don't think it has anything to do with Kevin being a little thief. XD Unless that's what the story portrays.
 
        
             
        
        
        
Explanation:
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I think they are giving an explanation of Scotland. Hope this helpsn
        
                    
             
        
        
        
Answer:
It makes the speaker sound casual 
Explanation:
The use of "cause, a-swimmin, and awesome" by the poet makes her sound casual. A casual text is one that is written in a relaxed tone, and an informal manner. Such a text makes use of everyday language that is easily understood by the reader. As a person reads the poem, "Ode to an Otter", there is a feeling of familiarity and good understanding of what the poet is saying because of her choice of words.
She abbreviated <em>because</em> using <em>'cause' </em>and<em> always swimming</em>, using <em>'a-swimmin'</em>. This removes the formality in the poem and makes it informal or casual.