A deer stag barks as the annual rutting season continues, in Richmond Park, London, Britain on October 16, 2023. (Photo by Toby Melville/Reuters)





A Green pigeon sits on the branch of a tree in Morigaon District of Assam, India on October 23 , 2023. (Photo by Anuwar Hazarika/NurPhoto/Rex Features/Shutterstock)





This photo taken on October 14, 2023 shows a wild yak at the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region. With an average altitude of 4,580 meters, the Altun Mountains National Nature Reserve covers a total area of 45,000 square kilometers. The reserve is a representative of plateau desert ecosystem in China and is home to a wide variety of rare animals. (Photo by Xinhua News Agency/Rex Features/Shutterstock)





This photo taken on October 13, 2023 shows black-necked cranes at the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region. With an average altitude of 4,580 meters, the Altun Mountains National Nature Reserve covers a total area of 45,000 square kilometers. The reserve is a representative of plateau desert ecosystem in China and is home to a wide variety of rare animals. (Photo by Xinhua News Agency/Rex Features/Shutterstock)





The annual gathering in (or round up) of Exmoor ponies from the Anchor Herd on Winsford Hill in Exmoor National Park, UK on October 16, 2023. The ponies are rounded up and brought in for health checks. (Photo by Rex Features/Shutterstock)





Capped Langur at the Khadim Nagar National Park in Sylhet, Bangladesh on October 16, 2023. Capped Langurs are considered vulnerable to extinction as their populations are declining rapidly and most are not connected to each other, which leads to unhealthy inbreeding. Despite this, they can fairly easily be seen in many national parks in the eastern region of Bangladesh. (Photo by Zabed Hasnain Chowdhury/NurPhoto/Rex Features/Shutterstock)





A red squirrel forages in woodland at RSPB Loch Leven Nature Reserve, on October 11, 2023, in Kinross, Scotland. (Photo by Ken Jack/Getty Images)





This photo taken on October 15, 2023 shows a crocodile at Nairobi National Park in Nairobi, Kenya. The Nairobi National Park, situated approximately 7 kilometers from the city center, is a habitat for varied wildlife population. Established in 1946, this park is home to nearly 100 species of mammals and over 500 species of birds. (Photo by Xinhua News Agency/Rex Features/Shutterstock)





A Chameleon sits inside a tree in Ajmer, Rajasthan, India on 19 Ocotober 2023. (Photo by Himanshu Sharma/NurPhoto/Rex Features/Shutterstock)





A sambar deer grazes on the edge of a forest adjacent to Singapore's Central Catchment Nature Reserve on October 23, 2023. (Photo by Xinhua News Agency/Rex Features/Shutterstock)





In the forests of Viiksimo in Finland, in October 2023, a popular spot for watching wolves and bears, a crow has a rival at its lunch spot. (Photo by Valtteri Mulkahainen/Caters News Agency)





Migrating salmon are seen leaping at Buchanty Spout on the River Tay in Perthshire on October 10, 2023 in Crieff, Scotland. The salmon are returning upstream from the sea where they have spent between two and four winters feeding, with many covering huge distances to return to the fresh waters to spawn. (Photo by Jeff J. Mitchell/Getty Images)





A Common Kingfisher waiting for its prey in Nagaon District of Assam, India on October 9, 2023. (Photo by Anuwar Hazarika/NurPhoto/Rex Features/Shutterstock)





A seagull sits on the Red Beach created by clusters of suaeda salsa on October 17, 2023 in Yingkou, Liaoning Province of China. (Photo by Huang Jinkun/VCG via Getty Images)





Moorhens on the lake at Sefton Park, Liverpool on Wednesday, October 18, 2023. (Photo by Peter Byrne/PA Images via Getty Images)





A river otter hunts crayfish in the Umpqua River near Elkton, Oregon, on Wednesday, October 18, 2023. Robin Loznak/Zuma Press Wire)





Aerial view of milu deer at Tiaozini Wetland on October 17, 2023 in Yancheng, Jiangsu Province of China. (Photo by Sun Jialu/VCG via Getty Images)





A rainbow water snake holds tightly to a clump of grass to avoid being eaten by a purple heron. The heron took flight and won the battle in the Mangalajodi Wetland of Odisha, India in October 2023. (Photo by Mainak Halder/Solent News)





A stag roars during rutting season for red deer at Richmond Park in London, Britain, 10 October 2023. Rutting or mating season runs from September to November. A stag can hold up to 40 female deer in a harem. A stag will have an increase of testosterone and use roars as a way to deter rivals. (Photo by Neil Hall/EPA/EFE)





A squirrel carries a walnut among fallen leaves with the colors of the season in the parks of Cankaya district during autumn season in Ankara, Turkiye on October 25, 2023. (Photo by Emin Sansar/Anadolu via Getty Images)