Science fiction "They were not like us." Spaceship investigates a post-Nova star, passes a world whose civilization was destroyed with the Nova, then makes first contact with an alien ship. They aliens appear "horse like" on video. When asked about the dead world, why they did not warn the world, they reply: "Why should we care? They were not like us." The human ship captain decides not to warn the ship about the event horizon of the collapsed star, though some crew members object. He replies: "Why should we care? They were not like us."
This story is likely from a children’s anthology. Little boy lives in a spaceship (maybe space colony?). He has a pet (maybe turtle?). Pets are rare due to scarcity. A group of visitors come (maybe from another colony) and are amused by the pet. The boy is pressured to give the pet as a gift to the visitors.