and wildlife management. Tracking enables the detection of rare, endangered, and elusive species. The science of tracking is utilized in the study of forest carnivores like the Canada lynx (Felis lynx) and the wolverine (Gulo gulo). Various measurements of tracks, and/or an animal's paws, and subsequent analyses of the datum, can also reveal important information about animals' physiology and their behavior. For example, measurements of lynx paws demonstrate their support capacity (on snow) to be double that of bobcat. Recognition of signs In order to recognize a specific sign, a tracker often has a preconceived image of what a typical sign looks like. Without preconceived images many signs may be overlooked. However, with a preconceived image of a specific animal's spoor in mind, trackers will tend to 'recognize' spoor in markings made by another animal, or even in random markings. Their mind will be prejudiced to see what they want to see, and in order to avoid making such errors they must be careful not to reach decisions too soon. Decisions made at a glance can often be erroneous, so when encountering new signs, trackers take their time to study signs in detail. While preconceived images may help in recognizing signs, the tracker must, however, avoid the preconditioned tendency to look for one set of things in the environment to the exclusion of all others. Trackers will always try to identify the trail positively by some distinguishing mark or mannerism in order not to lose it in any similar spoor. They will look for such features in the footprints as well as for an individual manner of walking. Often hoofs of antelope are broken or have chipped edges, or when the animal is walking it may leave a characteristic scuff mark. Experienced trackers will memorise a spoor and be able to distinguish that individual animal's spoor from others. When following a spoor, trackers will walk next to it, not on it, taking care not to spoil the trail so that it can easily be found again if the spoor is lost. The shadows cast by ridges in the spoor show up best if the spoor is kept between the tracker and the sun. With the sun shining from behind the spoor, the shadows cast by small ridges and indentations in the spoor will be clearly visible. With the sun behind the tracker, however, these shadows will be hidden by the