By David Wetzel New York (Knewz) — An unlikely friendship formed at Brookfield Zoo. A video posted to Instagram by the zoo, located in Brookfield, Illinois, shows an otter and gibbon appearing to start up an unlikely friendship on a tree branch. In the video, the otter climbs onto a tree branch where the gibbon is hanging out on and begins getting close. The otter appears to sniff and even reach out to touch the gibbon, which seems unbothered by the interaction. After more than a minute of interactions, the gibbon grabs onto a higher-hanging branch and swings away to another part of the zoo. T…