Gumibehrs
Spelled that way because the trademark is still enforced, even in the 26th Century. Apparently sweetened gelatin is still going to be a thing for our descendants. Go figure, huh?
Anyway, gumibehrs are essentially transparent blobs of free-moving alien plant matter that lack any kind of bone structure or exoskeleton at all. Their skin is, however, incredibly strong, and can get them enough traction to allow a gumibehr to reach a decent rate of speed once it gets started. While the species is obviously highly plastic and flexible, it relaxes to a shape that is indeed reasonably ursinoid: hence, the name. They reproduce via the usual wind-borne pollination method, albeit a bit more proactively than normal: gumibehrs typically release pollen via regular outgassing of built-up oxygen in a centralized waste orifice. Gumibehrs typically move on all fours, but can be trained to walk upright.