The Largescale Four-Eyes (Anableps anableps) is a freshwater and brackishwater fish in the Anablepidae family of four-eyed fish.
The Largescale Four-Eyes is an elongated fish with prominent eyes. It is greyish to reddish-brown in colour. It has a paddle-shaped tail.
It does not really have four eyes. Each eye has a horizontal band of tissue that splits the skin lengthwise (horizontally) into two lobes. Each lobe has its own pupil with its own vision. Therefore, there are four pupils, not four eyes. This means that, when it lies on the surface of the water, one lobed pupil looks at the sky and the other lobed pupil looks underwater. So, it can see above and below the surface of the water at the same time.
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The Chartreux Cat (Felis catus) is a mammal in the Felidae family of cats. It is a rare domestic cat. A cat is a felid, or a feline.
The Chartreux Cat has short, thick, silver-grey fur, which is called blue fur. Unlike most other cats, it has water-resistant fur due to a double layer of medium-length, slightly woolly hair. It sheds its fur moderately. It is large and muscular with short ears and a fluffy tail. It has distinctive orange or amber eyes. It is considered to be highly intelligent.
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The more streamlined an animal, the faster it is. To be streamlined means that the shape of the animal has smooth, flowing lines that enable it to reduce resistance to movement (called drag), such as through water or air.
Research scientists have found that the bulging eyes and mouth of a stingray makes it a faster swimmer. This seems impossible, because any part of a body that is protruding (sticking out) usually makes an animal slower.
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The Madagascar Giant Day Gecko (Phelsuma madagascariensis or Phelsuma grandis) is a reptile in the Gekkonidae family of gecko lizards.
The Madagascar Giant Day Gecko is bright green with a red stripe from its nostril to each eye. It has red coloured dots or bars on its back. Its underbelly is creamy-white or yellow. It has round pupils (instead of vertical pupils like nocturnal lizards). It has no eyelids, so it keeps its eyes moist and clean by licking them with its long tongue.
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The Australian Emu (Dromaius novaehollandiae) has protective nictating membranes on its eyes. The membrane over each eye protects them from dust.
A nictating membrane is a transparent or translucent eyelid. The eyelid membrane not only protects the eye from dust, it also moistens the eye and cleans away any dust or dirt. This is because the emu lives in dry, dusty areas of Australia.
Nictating means blinking. The eye membrane is called a third eyelid, or a haw, or a plica semilunaris, or a membrana nictitans.
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The Dusky Grouper (Epinephelus marginatus) is a marine (saltwater) fish in the Serranidae family of ray-finned groupers. It is also known as the Yellowbelly Rock Cod or the Yellowbelly Grouper.
The Dusky Grouper is a very large, oval-shaped, large-headed fish with a wide mouth and a protruding lower jaw. It is grey or dark reddish-brown, usually with yellow-gold counter-shading. It has irregular pale green-yellow or silver-grey blotches on its head and body. There are black tips on its pelvic fins. It has large, bulging, blue eyes.
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The Black Goby (Gobius niger) is a marine (saltwater) ray-finned fish in the Gobiidae family of gobies.
The Black Goby is mottled-black with large scales around its neck. In the breeding season, the male becomes very black. It has a black spot on the front end of its dorsal (back) fins. It has an elongated shape with a rounded snout (nose). It has two dorsal fins that are almost continuous and looks like one fin. The dorsal fin closest to the tail has 6 spines. It has bulging eyes.
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The European Plaice (Pleuronectes platessa) is a marine (saltwater) fish in the Pleuronectiformes family of flatfish.
The European Plaice is oval-shaped with a thin, laterally compresed body and a small head. It has a small mouth with a single series of small incisor-like teeth. It has dark-green to dark-brown skin, which is blotched with irregular orange spots. It can camouflage its skin to match its environment. Its underside is pearly white. Its skin is smooth with small scales. Both eyes are on the right side of its body (it is called a right-eyed flatfish).
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The Atlantic Mudskipper (Periophthalmus barbarus) is a marine (saltwater) fish in the Oxudercidae family. It is similar to the Goby. It is also found in freshwater and brackish water. It is amphibious – it can live in the water and on land – but it is not an amphibian (like a frog or toad) because it does not have lungs.
The Atlantic Mudskipper has a long brown or greenish body. During the mating season it develops coloured spots, such as red, green or blue. It has close-set, bulging eyes. It has forward fins that are similar to legs that enable it to walk, or skip, along the surface of the mud. It can even climb trees.
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The Great Seahorse (Hippocampus kelloggi) is a marine (saltwater) fish in the Syngnathidae family. It is a teleostfish. It is also known as the Kellogg’s Seahorse.
The Great Seahorse has a smooth, pale body. Its tail has tail rings. Its snout (nose) is thin with a stub end. Each eye moves separately, enabling it to see its predators from all directions. The male has a smooth, soft pouch-like area at the base of its abdomen, with a small fin. The female has a pointed stomach and a larger fin at the base of her abdomen.
It has a forward tilt, and a long, coiled tail. It swims using its dorsal fin, keeping its vertical position and leaning forward.
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The Yellow Mongoose (Cynictis penicillata) is a mammal in the Herpestidae family. It is also known as the Red Meerkat.
It is mainly diurnal, active during the day. Diurnal animals usually have round pupils, like the eyes of humans.
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Most animals can look at other animals and humans in the eyes. Pet animals do. However, there is a difference, in general, in the way cats and dogs make eye contact with humans.
A cat makes quick, fleeting eye contact with a human. A cat looks at a human in the eyes and then looks away quickly, and then may look back again. This is known as a ‘less intrusive glance’ or a fleeting glance.
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The Marmalade Fly (Episyrphus balteatus) is a small insect in the Syrphidae family of hoverflies. It is also known as the Marmalade Hoverfly.
The Marmalade Fly is patterned with orange and black bands on the top of its abdomen. The female has dark-orange, light-orange, and black bands. It looks like a wasp, but it is smaller and it does not have a tiny waist. The male has holoptic eyes, which means that the left and right compound eyes touch at the top of its head. The adult has wings.
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The Oblique-Lined Tiger Beetle (Cicindela tranquebarica) is a large insect in the Carabidae family of ground beetles.
The Oblique-Lined Tiger Beetle has a small rounded head, a small thorax (chest), and a long brown-grey abdomen (body). It has yellowish lines on its back, on its wing covers, called elytra. One wing cover is called an elytron. It has wings and can fly. Its antennae are long, black, and ridged. It has a groove on its foreleg with a comb of hairs used for cleaning its antennae. It has bulging eyes. It has six long, thin, hairy legs.
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The Slender Seahorse (Hippocampus reidi) is a marine (saltwater) fish in the Syngnathidae family. It is a teleostfish. It is also known as the Longsnout Seahorse.
The Slender Seahorse is brightly-coloured. The male is usually orange and the female is usually yellow. Both the male and the female have small brown or white spots unevenly over their body. During courtship, the spots may change colour to pink. Its snout (nose) is thin with a stub end. Each eye moves separately, enabling it to see its predators from all directions.
It has a forward tilt, and a long, coiled tail. The male has a smooth, soft pouch-like area at the base of its abdomen, with a small fin. The female has a pointed stomach and a larger fin at the base of her abdomen.
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The Pallas’s Cat (Otocolobus manul) is a wild cat, native to Central Asia, in countries such as Afghanistan, Mongolia, Tajikistan, Kyrgyzstan, Nepal, India, Kazakhstan, and Pakistan.
The pupils in its eyes are round, not vertically-lined pupils like the eyes of domestic cats.
Domestic cats are nocturnal (active at night) and have vertical pupils, called slits.
The Pallas’s Cat is diurnal (active during the day) and have round, circular pupils.
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The Short-Snouted Seahorse (Hippocampus hippocampus) is a marine (saltwater) animal in the Syngnathidae family. It is a teleostfish.
The Short-Snouted Seahorse can be black, purple, orange, or brown. Its snout (nose) is short and up-turned. It has a forward tilt, and a long, coiled tail. The male has a smooth, soft pouch-like area at the base of its abdomen, with a small fin. The female has a pointed stomach and a larger fin at the base of her abdomen. Each eye moves separately, enabling it to see its predators from all directions.
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What is the difference between the Emu (Dromaius novaehollandiae) and the Greater Rhea (Rhea Americana)?
The Emu and the Greater Rhea are large fightless birds. The Emu and the Greater Rhea are both ratites, because they cannot fly (the Ostrich, Kiwi, and Cassowary are also ratites).
The Emu and the Greater Rhea have a large, soft, grey-brown feathered body, a long featherless neck, and long featherless legs with three toes.
The Emu has orange-brown eyes, whereas the Greater Rhea has blue to brown eyes.
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What is the difference between the Common Goldeneye (Bucephala clangula) and the Smew (Mergellus albellus)?
The Common Goldeneye and the Smew are both medium-sized birds in the family of diving ducks.
The Common Goldeneye has bright golden eyes, whereas the Smew has brown eyes.
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The Common Goldeneye (Bucephala clangula) is a medium-sized bird in the duck family. It is a diving duck. It is a sea duck, living in marine (saltwater) locations, but it breeds in freshwater lakes. It is related to the Smew.
The Common Goldeneye has prominent golden eyes. The male has a dark head with greenish iridescent feathers and a round white patch below its eyes. It has a dark back, a white neck, white sides, and a white chest. The female has a brown head and a mostly grey body. Both males and females have a yellowish beak, yellow legs, and orange-yellow webbed feet. Its beak is grey, although the female has a yellow tipped beak.
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