Keen skills of observation reveal laughing rats and crosswalking crows.

Zoology as we know it usually refers to animals and how they are adapted to their natural environment. We usually think of animal behavior as pure instinct, and ignore adaptations that allow them to productively thrive while interacting with mans environment. In an article recently published on radioopensource.org, we are shown rats that can be recorded laughing while playing and crows that seem to have developed an intricate strategy to crack nuts.
first drop nuts onto a road to try to crack them. Failing that, they drop them where a car will run over that. This leads to difficulty in eating the nuts, so the birds are recorded drooping the nuts onto a crosswalk, waiting for the light to change and then walking out to eat the nuts.
Observation can open a parallel universe , to those who have sharpened their skills to those of a scientist!