Speaking of animal intelligence: I have always been impressed by the short-term memory of chimpanzees, which outperforms that of humans:

https://www.youtube.com/watch?v=VM5QS_adrIQ

The explanation given by scientists is that chimpanzees need this type of memory to keep a clear mental map of their surroundings while climbing. Still, spectacular.

Unfortunately that was a flawed study. They paired trained chimps with people who saw the task for the first time.

It was later repeated, and if given the same training, humans still outperform chimps in this task.