This is one of the most common standard poster size (Super A1). These posters are used for most applications including outside of events, trade shows, and malls. Also widely used for small movie posters delivered to fans and posters for decoration like in University residences and outside a pub or club.
Mountain lions are shy, elusive, and primarily nocturnal animals that occasionally are active during daylight hours. For this reason they are seldom observed, which leads the general public to believe that they are relatively rare, even in areas where lion populations are high.
Nocturnality is a form of crypsis, an adaptation to avoid or enhance predation. One of the reasons that (cathemeral) lions prefer to hunt at night is that many of their prey species (zebra, antelope, impala, wildebeest, etc.) have poor night vision.