Squirrel super memory: it's a combination of scent and memory http://jacobs.berkeley.edu/wp-content/uploads/2015/10/Animal-Behaviour-1991-Jacobs.pdf http://jaco

Squirrel super memory: it's a combination of scent and memory http://jacobs.berkeley.edu/wp-content/uploads/2015/10/Animal-Behaviour-1991-Jacobs.pdf http://jacobs.berkeley.edu/wp-content/uploads/2015/10/Animal... Possibly enhanced by smelling their own saliva? Just guessing