Simile as he comparing his leg to the word using the word like
<span><span>"he heard the slap of the window curtains
against the wall and the sound of paper fluttering from his desk,
and he had to push to close the door." quoted from the book</span></span>
Answer:
The definition of tragic in coorelation to this sentence would be devastating or unexpected, but I would go with devastating because that's a synonym for tragic.
Explanation:
This is because the puppy's return to the animal shelter was devastating/unexpected. However devastating is a synonym for tragic.