Shares of Freshpet (FRPT -3.92%) were barking up a tree this week as the maker of perishable dog and cat food delivered a strong fourth-quarter earnings report with a solid improvement in profitability and another quarter of strong revenue growth.As of Thursday's close, the stock was up 23% for the week. Freshpet gets a boneFreshpet's revenue in the quarter rose 29.9% to $215.4 million, well ahead of the analyst consensus of $204.4 million. The company marked its sixth straight year of revenue growth above ...