Red foxes use the Earth's magnetic field to find their prey. They rely on the shadow and sound of their prey to know when to strike.

April 10 rolls around, and suddenly, childhood rivalries, inside jokes, and borrowed clothes come flooding back. Siblings Day is here—a day to appreciate the ones who stole your toys, tattled on you, and yet somehow remain your biggest supporters. Although Siblings Day is not a federally recognized holiday, it has gained recognition across several countries. The idea came from Claudia Evart, who established the day in memory of her late siblings. Since 1995, the Siblings Day Foundation has worked to celebrate this occasion and the unique connection shared by brothers and sisters.

Siblinghood isn't just for humans—it's a big deal in the wild too! Red fox cubs, featured in today's image, take sibling rivalry and teamwork to a whole new level. Cubs are born in an underground den, blind and helpless. Their mother keeps them safe while the father brings food. But as their eyes open and legs strengthen, the real fun begins. Sibling play is essential, shaping their hunting and social skills while keeping things entertaining. Wrestling, pouncing, and even playful ambushes are all part of the training. They mimic each other's behaviors, test their boundaries, and develop their cunning instincts as a team. So, this Siblings Day, take a lesson from these animals—embrace the chaos, enjoy the fun, and maybe let your sibling have the last snack—just this once.