Final answer:
The implication of the tiger urine odor being exclusively below the tarp is that the tiger is marking its territory, which is a common behavior seen in tigers and other animals to establish their domain and communicate with others. The sheltered location helps the scent to last longer.
Step-by-step explanation:
If the tiger urine odor is exclusively below the tarp, the implication is that the tiger is marking its territory. The behavior of animals marking territory is commonly observed in various species, including tigers, dogs, and cats. Tigers mark their territory with urine as a way to communicate with other tigers and to establish their domain.
This territory marking can be linked to the flehmen response, described in, where tigers curl their upper lip to help pheromone molecules enter the vomeronasal organ. This is a sensory analysis behavior to detect the presence and composition of these territorial markers. The presence of the odor under the tarp suggests that the tiger likely sheltered there and marked this spot, indicating ownership and warning other tigers to stay away.
Similar to the effects of scent described in the Librettists passage, where the lingering smell affects the environment, animal territorial markers can have a strong presence in an area. The fact that it is under the tarp may indicate that it is a sheltered location, preferable for scent marking as the odor will be protected from the elements and last longer.