Mola mola
The Ocean sunfish, scientifically known as Mola mola, is an extraordinary and fascinating marine creature that defies the typical fish archetype with its unique appearance and behaviors. This colossal fish is most notable...Amphiprion ocellaris
The Ocellaris clownfish, scientifically known as Amphiprion ocellaris, is a vibrantly colored marine fish that belongs to the family Pomacentridae. This species, often simply referred to as the clownfish, has captured the...Steatornis caripensis
The Oilbird, scientifically known as Steatornis caripensis, is a truly unique and fascinating avian species, not just because of its distinctive lifestyle and dietary habits, but also due to its exceptional navigational...Papilio machaon
The Old World Swallowtail (Papilio machaon), a striking and widely recognized butterfly, is a member of the family Papilionidae, which comprises large and colorful butterflies commonly referred to as swallowtails. This...Papio anubis
The Olive Baboon (Papio anubis), a prominent member of the Old World monkey family, stands out as a fascinating and adaptable primate species indigenous to 25 African countries. This species derives its common name from...Lepidochelys olivacea
The Olive Ridley sea turtle (Lepidochelys olivacea), named for the olive color of its heart-shaped shell or carapace, is one of the smallest species within the sea turtle family. Adult Olive Ridleys typically weigh...Proteus anguinus
The Olm, scientifically known as Proteus anguinus, is a fascinating and unique species of aquatic salamander that dwells in the dark, subterranean waters of limestone caves found primarily in the Dinaric Alps, stretching...Tiliacea citrago
The Orange Sallow, scientifically named Tiliacea citrago, is a captivating moth species belonging to the family Noctuidae, a large family known for its nocturnal habits and diverse species. This particular moth is...Pongo
Orangutans, belonging to the genus Pongo, are among the most iconic and fascinating primates on the planet. Native primarily to the lush rainforests of Borneo and Sumatra, these magnificent creatures are the world's...Blatta orientalis
The Oriental cockroach (Blatta orientalis), often referred to as the waterbug or black beetle, is a large species of cockroach native to the warm, temperate and tropical regions of Africa. However, it has spread widely...Vespa orientalis
The Oriental hornet, scientifically named Vespa orientalis, is a captivating species of hornet that is indigenous to parts of the Middle East, North Africa, and extending into the Mediterranean regions of Southern Europe...Xenopsylla cheopis
The Oriental rat flea, scientifically known as Xenopsylla cheopis, is a small, wingless insect that plays a significant role in the transmission of various diseases, most notably the bubonic plague. This species of flea...Crocodylus intermedius
The Orinoco crocodile (Crocodylus intermedius) is a fascinating and critically endangered species of crocodile found primarily in the Orinoco River basin in Venezuela and Colombia. This remarkable reptile is one of the...Malpulutta kretseri
The Ornate paradisefish, scientifically named Malpulutta kretseri, is a captivating and relatively diminutive species of freshwater fish that belongs to the gourami family. This species is native to the tropical waters of...Emberiza hortulana
The Ortolan, scientifically known as Emberiza hortulana, is a small, elusive bird that is a part of the bunting family Emberizidae. This species is renowned for its beautiful plumage, melodious song, and, unfortunately,...