The former Golf Channel and Fox Sports host, golf influencer Holly Sonders is seen on November 18, 2022 in Los Angeles, California. (Photo by joce zerojack/Bauer-Griffin/GC Images)
A white crab spider hides between the petals of a rain spotted rose blossom in the garden of a home near Oakland in southwestern Oregon on August 23, 2024. Crab spiders are ambush predators and wait patiently for their prey to approach. (Photo by Robin Loznak/ZUMA Press Wire/Rex Features/Shutterstock)
A spectator cools herself at a water spraying fan at the Australian Open tennis championships in Melbourne, Australia, Tuesday, January 17, 2017. (Photo by Kin Cheung/AP Photo)
In animals, yawning can serve as a warning signal. For example, Charles Darwin, in his book The Expression of the Emotions in Man and Animals, mentioned that baboons yawn to threaten their enemies, possibly by displaying large canine teeth. Similarly, Siamese fighting fish yawn only when they see a conspecific (same species) or their own mirror-image, and their yawn often accompanies aggressive attack. Guinea pigs also yawn in a display of dominance or anger, displaying their impressive incisor teeth. This is often accompanied by teeth chattering, purring and scent marking.
A model poses for a photographer backstage ahead of the Ferreira Couture catwalk show at Malta Fashion Week in Valletta, Malta on July 20, 2022. (Photo by Darrin Zammit Lupi/Reuters)
British model Demi Rose, 24, showed off her curves in a photo shoot in Tunisia on Saturday, May 4, 2019. The Birmingham-born beauty slipped into a nude two-piece dripping in jewels and went barefoot the photo shoot in a temple. (Photo by KP Pictures)
St Andrews University students skinny dip in the sea as May Day celebrations in St Andrews, Scotland on April 30, 2017. Hundreds of revellers ditched their clothes and bravely jumped into the bitterly cold North Sea. (Photo by Alamy Stock Photos)