1.) 'the old swamper'- 2
noun 'swamper' sets him as an occupations, not a person.
2.) 'the old man squirmed uncomfortbaly...had him....proudly..best sheep dog I ever seen'-3
verb 'squirmed' discomfort
repetition of 'had him' draws attention to duration of companionship
Adverb 'proudly' parallels relationship with pet with father and child
3.) 'I ought to have shot that dog myself. I shouldn't oughta let…