As for African wild dogs, scientists believed for many years that all decisions were made by pack leaders. Each pack, which usually includes between 5 and 20 animals, is led by a mating pair—a male and a female. Scientists assumed that this pair ruled the group with ruthless authority. For example, only the lead pair’s puppies are allowed to survive into adulthood.
But in 2014, a team of scientists made a surprising discovery. They had traveled to Botswana to learn more about the wild dogs, which are among the most endangered animals on Earth, with only about 6,600 remaining in the wild. The scientists tracked the dogs for weeks. They watched how the packs would gather to play, wrestling and yipping and chasing each other just like your own dog might frolic with its furry pals at the park.
These playful gatherings are called “rallies.” The researchers noticed that in addition to all the fun, there was an unusual amount of sneezing at these rallies. As the dogs ran and jumped, many would also sneeze. Achoos would echo through the air. Then the sneezing fits would suddenly end. The packs would either race off together to hunt for an antelope or a warthog, or stretch out in the grass to laze away the afternoon.