Animal Psychology. Do you think there are any bi-polar polar bears? ~

I don't know about bipolar polar bears but I do recall that there were a couple of polar bears in the Central park Zoo that suffered from depression as witnessed by their constant swimming back and forth in the relatively small area in which they were contained.  The zoo personnel tried to help that by throwing different colored big balls into the pool, other shiny objects to catch their attention in the hope they would play with them.  I don't remember whether it worked not.

From Wikipedia:

"In 1994 zoo officials began noting Gus' unusual behavior in his habitat. He was seen swimming back and forth in a figure eight pattern, again and again, for up to 12 hours a day.^[3] Such behavior in captive animals usually points to boredom and stress.^[10] The zoo hired an animal behavioral therapist at a cost of $25,000 to determine the reason for Gus' obsessive swimming.^[3] According to the therapist, "Gus is just bored and mildly crazy in the way that a lot of people are in New York".^[2] He ordered an "enrichment program" for the polar bear that included a redesigned habitat, "challenges" at mealtime, new toys and "positive-reinforcement training sessions".^[2][3] In 2002 the BBC reported that zookeepers had installed a jacuzzi to "cheer up" Gus.^[11] Gus was also the first zoo animal in history to be treated with Prozac.^[6][7] After a few months, Gus' obsessive swimming tapered off, but never disappeared entirely.^[3] He and his two partners, Lily and Ida, were featured at the 2005 International Conference on Environmental Enrichment.^[12]

From the publicity surrounding his diagnosis and treatment, Gus became a symbol of the "neurotic" New Yorker.^[1][2]"

This post was edited by SpunkySenior at April 25, 2020 5:34 PM MDT

No.  Polar bears are uni-polar (only found near the northern pole).  However, there have been reports of tri-polar bears.  When their food source gets low, they’re willing to “try” anything.  

Sounds like a candidate for the pun challenge.

The Environmental
effects create changes. So maybe. This post was edited by Baba at April 26, 2020 9:31 AM MDT

Maybe the ones who go south for the winter.