The canine stretches his legs since the pup seems to hurry to meet the sibling midway.
Yet, he didn’t run; he recently strolled. Perhaps he’s had a drawn-out day of running and wasting time and had to loosen up his legs. His sibling approaches him and welcomes him. And afterward the canine accomplishes something no doubt the justification for extending the legs. He pulls himself up to remain on his back legs and embraces his sibling.