A diagonal 2 x 2 bounding gait is very common among the weasel family.
Note that the hind foot registers on top of the front foot and the feet
on one side are placed slightly ahead of the feet on the other side.
James Halfpenny points out that this is actually a gallop.
A 4 x 4 gait is also common with both the mink and otter. I suspect that it signals
slower movement, and perhaps more curious or investigative behavior, compared to
the 2 x 2 gait.
Tracks
Gaits
These photos shows a bounding gait typical of the mink in wet, firm sand.