Other than humans are there any other organisms with a brain that learn how to maneuver or act normal in 0 gravity? I saw a video of cats and pigeons at 0 gravity freak out but in time could they adapt?
The cat and pigeon tests were done on parabolic flights in an airplane.
Quail have been brought to space. They didn't do well. They had trouble eating and had to be fed.
During the 7-day tour of weightlessness on Mir, though they could feed themselves, the quails seemed not to have an appetite for the spice of life. Researchers observed arrest of ovulation in the hens and a mutual “absolute apathy” to mating.
They were unable to fly in microgravity.
Mice do adapt to microgravity:
Do the animals like living in microgravity? Does floating instead of walking confuse them? "Amazingly, they adapt very quickly," says Laura Lewis, a member of NASA Ames Institutional Animal Care and Use Committee. "Within 5 minutes, mice are floating in their living spaces, grooming themselves, and eating, just as they would on Earth."
What are some of the results of animals in orbit? Fish and tadpoles swim in loops, rather than straight lines, because there is no up or down to orient them, Lewis says. If a light shines, the fish use that as their guide source and swim towards the light. Baby mammals have a hard time in space because they normally huddle for warmth-and in space, it's hard to huddle when bodies drift and float. It's also difficult for babies to nurse when they can't locate their mother's nipple.