They had also learned how to flip open garbage lids in the suburbs of Sydney, Australia. Scientists wonder what they’ll work out next.

The bull giraffe began running in place on the ground, flailing its limbs “with enough force to topple entire trees,” rescuers said.

There is no shortage of easier prey in Kruger and “an adult male giraffe can kill them easily with one kick,” says O’Connor. The marathon event “shows amazing perseverance,” Fennessey says.

The rumble of a Land Cruiser’s diesel engine as it trundles along miles of red dirt roads, rocks pinging off its metal ...