Roosters are infamous for their early-morning cock-a-doodle-do, but a new study looked closer at this behavior. Turns out that the first to crow is the dominant rooster in the bunch. If you take him away, the next in line in the pecking order takes over those wake-up alarm duties. But the subordinate roosters always waited for the boss to crow first, even if he did so later than usual.
Rats exploring a new environment do better with a buddy. Scientists measured rats second exploration of a novel space either alone or with another rat. Rats who had a buddy on that second trial were more exploratory, and the effect lasted through a third solo trial. Read more!