Some tracking terms

Some advice on tracking

Straddle is the distance from inside of prints and edge of prints.
Gait is animals style of walking
Gait is the pattern of movement of the limbs of animals, including humans, during locomotion over a solid substrate. Most animals use a variety of gaits, selecting gait based on speed, terrain, the need to maneuver, and energetic efficiency. Different animal species may use different gaits due to differences in anatomy that prevent use of certain gaits, or simply due to evolved innate preferences as a result of habitat differences. While various gaits are given specific names, the complexity of biological systems and interacting with the environment make these distinctions 'fuzzy' at best. Gaits are typically classified according to footfall patterns, but recent studies often prefer definitions based on mechanics. The term typically does not refer to limb-based propulsion through fluid mediums such as water or air, but rather to propulsion across a solid substrate by generating reactive forces against it.
Displacement is the term for when the quarry has moved from one substance to another, so that grass is on the sand, or water from stream is moved into river bank.
Dry sand, short grass, hard surfaces are difficult to track on.

Humans
The faster a person tends to move the longer the strides, the narrow the stradle, and the deeper the toes in relative terms.
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