Not bad, I think you could improve it a lot with some small changes.
-Run cycles will go faster with fewer frames. When the fox is running away from the owl, remove half of the frames in the cycle and it'll look like he's going faster.
-Try bending the legs more when you're doing run cycles in profile. Don't be afraid to put some squash and stretch in there too, I know that a lot of squash and stretch can make things look cartoony, but without enough things will look a bit stiff.
-There might be a little too much dead space in there, try to remove some frames here and there to tighten it up on the whole! You'd be surprised, tighter timing can make a huge difference with the energy level on the whole.
Also... did that fox learn English from watching anime dubs? Hahaha sorry, it's just something about the inflection, feels like it has been localized!