Cats (Felines) Honor

Nature Study

Requirements

1. What is the scientific name of the cat family? What are the common characteristics of this family?

   Answer: The scientific name of the cat family is FELIDAE (felids). The common characteristics of this family are: (1) strict carnivores (hypercarnivores) — they feed essentially on meat; (2) a muscular, agile, and flexible body, adapted to run and leap onto prey; (3) retractable claws (which withdraw into the paws, except in the cheetah), kept sharp to grab prey and climb; (4) long canines and carnassial teeth that cut meat like scissors; (5) a digitigrade gait (they bear weight only on their toes), with pads that make their step silent; (6) keen night vision (tapetum lucidum) and frontal eyes with binocular/stereoscopic vision; (7) highly developed hearing and smell, in addition to sensory vibrissae (whiskers); (8) a rough tongue with horny papillae, used to scrape meat off bones and for grooming the coat; (9) excellent, predominantly solitary hunters (except the lion, which lives in prides). — The Felidae family has about 41 living species distributed across 14 genera, divided into the subfamilies Pantherinae (big cats: lion, tiger, leopard, jaguar, snow leopard) and Felinae (the other cats, including the domestic cat Felis catus); they all descend from a common ancestor ~25 million years ago.

2. How is the paw structure similar in all felines?

   Answer: All felines have structurally similar paws: they are digitigrade animals (they walk bearing weight only on their toes, not the whole sole as humans do); they have 5 toes on the front paws (the first, equivalent to the thumb, being reduced and not touching the ground) and 4 toes on the hind paws. — Digitigrade locomotion allows high speed and agility — felines run bearing weight on their toes like a runner on tiptoe; pads and retractable claws ensure a silent approach to prey, a fundamental characteristic for ambush hunters; even the domestic cat (Felis catus) preserves these structures identical to those of the tiger.

3. In what way are the eyes of all felines similar?

   Answer: Felines' eyes share several characteristics: (1) frontal binocular position — both eyes facing forward give stereoscopic vision and precise depth perception, essential for leaping onto prey; (2) tapetum lucidum — a reflective layer behind the retina that returns light to the photoreceptors, generating the shine of the eyes when illuminated in the dark and night vision 6 to 8 times more sensitive than that of humans. — The tapetum lucidum is an adaptation shared by all nocturnal carnivores — it works like a biological mirror that doubles the light available to the retina, and it is the reason a cat's eyes 'shine' when struck by a flashlight; the vertical slit pupil is more common in small ambush predators because it allows greater control of depth.

4. What is the main food of the cat family? In what way are cats' teeth prepared for this?

   Answer: The main food of felines is MEAT — they are all strict carnivores (hypercarnivores), incapable of surviving without animal protein. Their teeth are specially prepared for this: (1) long, strong, pointed canines to pierce, hold, and kill prey; (2) carnassial teeth — sharp lateral premolars and molars that work like scissors, cutting meat and tendons rather than chewing; (3) the absence of flat grinding teeth (like the molars of herbivores), since they do not need to crush vegetables; (4) small incisors at the front, used to scrape meat off bones and for grooming the coat. — Felines have a dental formula of 3-1-3-1/3-1-2-1 (incisors-canine-premolar-molar on each side) — a total of 30 teeth (domestic cat) to 32 (some wild ones); the absolute dependence on meat is due to the inability to synthesize taurine, arachidonic acid, and vitamin A, present only in animal tissues — reference: the MSD Veterinary Manual.

5. What are cats' whiskers for?

   Answer: A cat's whiskers (technically called vibrissae) are specialized sensory hairs, thicker and more deeply rooted than ordinary hairs, connected to numerous nerve receptors. They serve to: (1) detect the size of openings and passages — the span of the whiskers roughly equals the width of the body, indicating whether the cat fits in a space; (2) sense changes in air currents and the proximity of objects in the dark, helping it navigate without seeing; (3) assist in hunting, perceiving the prey's movement very close to the muzzle, where vision is weak; (4) express mood — whiskers forward indicate interest/aggression, backward indicate fear. — Vibrissae are so sensitive that they detect air movements from up to 1 millimeter away; they are present not only on the muzzle but also above the eyes, on the chin, and on the back of the front legs (carpal vibrissae), all integrated into a sophisticated neural map.

6. How are cats' ears protected?

   Answer: A cat's ears have several layers of protection: (1) a highly mobile pinna (outer ear) — each ear rotates independently up to about 180 degrees by more than 30 muscles, allowing it to direct its hearing and turn away/fold the ear in the face of loud noises or danger; (2) inner hairs (tufts) at the entrance of the ear canal that block the entry of dust, dirt, and insects; (3) an L-shaped (curved) ear canal, which prevents objects from directly reaching the eardrum; (4) earwax produced in the canal, which traps particles and protects against infections; (5) the reflex of pulling the ears back, flat against the head, in situations of fight or fear, protecting them from bites and scratches. — Feline hearing is one of the most sensitive of mammals — it picks up frequencies from 48 Hz to 85 kHz (humans: 20 Hz-20 kHz), and this sensitivity requires elaborate protection because very loud sounds can easily cause permanent damage to the feline eardrum.

7. Identify, from photographs, illustrations, or personal observation, 4 breeds of domestic cats. Describe the temperament of each one.

   Answer: Four common domestic cat breeds and their temperaments: (1) Persian — a fluffy cat with a flat face, calm, docile, and quiet, ideal for an apartment; it likes laps and little activity. (2) Siamese — a slender body with a light coat and dark points (muzzle, ears, paws, tail) and blue eyes; vocal, communicative, playful, very attached to its owner, and demanding of attention. (3) Maine Coon — one of the largest breeds, with long fur and a bushy tail; docile, sociable, playful, and gentle, known as the 'gentle giant'. (4) Angora — long, silky fur, an elegant body; active, curious, intelligent, and affectionate, it likes to interact and play. — The Fédération Internationale Féline (FIFe) and TICA recognize more than 70 breeds of domestic cats; breeds vary not only physically but also in personality — temperament is considered a breed characteristic selected by breeders over centuries.

8. What are the benefits of domestic cats to humans?

   Answer: Domestic cats bring several benefits to humans: (1) natural pest control — they hunt rats, mice, and cockroaches, protecting grains, pantries, and urban environments; it was this usefulness that led to their domestication in ancient Egypt. (2) companionship and affection — they reduce loneliness and strengthen the owner's emotional bond. (3) health benefits — petting and living with cats decreases stress, blood pressure, and anxiety; purring has a calming effect. (4) encouragement of responsibility — caring for an animal teaches routine and commitment, especially to children. (5) therapeutic aid — used in animal-assisted therapies with the elderly and people with special needs. — A University of Minnesota Medical Center study (2008) followed 4,435 adults for 10 years and showed that cat owners have a 30% lower risk of dying from a heart attack than non-owners; purring generates vibrations in the 25-50 Hz range, a therapeutic frequency that aids in tissue healing.

9. Identify, from photographs, illustrations, or personal observation, 7 species of wild cats. State in which part of the world they are found.

   Answer: Seven species of wild cats and their distributions: (1) Tiger (Panthera tigris) — Asia (India, Russia, Indonesia, China). (2) Lion (Panthera leo) — sub-Saharan Africa and a small population in Gir, India. (3) Jaguar (Panthera onca) — Central and South America, from Mexico to Argentina, with the largest population in the Amazon and the Pantanal. (4) Leopard (Panthera pardus) — Africa and Asia. (5) Cheetah (Acinonyx jubatus) — the savannas of Africa and a small area in Iran. (6) Puma/Cougar (Puma concolor) — all of the Americas, from Canada to Patagonia. (7) Ocelot (Leopardus pardalis) — Central and South America, including Brazil. — The IUCN (International Union for Conservation of Nature) classifies a large portion of wild cats as threatened — the tiger, Asiatic lion, snow leopard, and Iberian lynx are in critical condition; habitat reduction and illegal hunting are the main threats.

10. Answer the following about felines:
    • What is the largest feline in the world?
    • What is the largest feline in South America?
    • What is the fastest feline in the world?
    • Which feline is popularly known as the "king of the animals"? What is its real temperament?

    Answer: (1) The largest cat in the world is the Siberian tiger (Panthera tigris altaica), weighing up to 300 kg and measuring 3.3 m from muzzle to tail. (2) The largest cat in South America is the jaguar (Panthera onca), at up to 158 kg, mainly in the Pantanal and the Amazon. (3) The fastest cat in the world is the cheetah (Acinonyx jubatus), which reaches about 100 to 120 km/h in short sprints — the fastest land animal. (4) The cat popularly known as the king of animals is the lion (Panthera leo). Despite the nickname, its real temperament differs from the image of a king: it rests and sleeps up to about 20 hours a day, lives in groups (prides), and, most of the time, it is the lionesses that do the hunting — the male defends the territory and the group. — The title of 'king of animals' attributed to the lion comes from Antiquity (Mesopotamia, Egypt, European heraldry) due to its visual majesty; scientifically, lions are powerful but economical predators — they prefer to steal food from hyenas, pumas, and leopards rather than hunt (kleptoparasitism) and depend on the lionesses in the group (Bertram, 1975, Serengeti Lion Project).

11. Tell the Story of Androcles and the Lion.

    Answer: Androcles and the Lion is a classic fable attributed to Aesop and popularized by the Roman historian Aulus Gellius. It tells how Androcles, a slave in ancient Rome, fled from his abusive master and took refuge in a cave in the African desert. There he found a lion moaning in pain because of a large thorn embedded in its paw. Instead of fleeing, Androcles had compassion, approached, and removed the thorn, tending the wound. The grateful lion became tame and came to live with and share food with Androcles. Some time later, Androcles was captured and condemned to be devoured by beasts in the public arena. When the lion was released to kill him, the animal recognized its benefactor and, instead of attacking him, lay down meekly at his feet. Astonished, the emperor pardoned Androcles and freed both him and the lion. The fable teaches that kindness and gratitude are rewarded, and that an act of mercy is never forgotten. — The story appears in the 'Attic Nights' by Aulus Gellius (2nd century AD), who cites the version by Apion — later taken up by Aesop, La Fontaine, and George Bernard Shaw (the play 'Androcles and the Lion', 1912) and adapted into films; it is one of the oldest narratives to explore the theme of gratitude between humans and animals.

12. Tell 4 Bible stories in which a member of the feline family is mentioned.

    Answer: Four Bible stories with felines (lions): (1) Samson and the Lion (Judges 14:5-6) — Samson, on his way to Timnah, is attacked by a young lion that he kills with his hands by the power of the Spirit of the Lord; later he finds honey in the lion's carcass, giving rise to his riddle. (2) Daniel in the lions' den (Daniel 6) — Daniel, for praying to God against King Darius's decree, is thrown into the lions' den, but God sends an angel who shuts the lions' mouths, and he comes out unharmed. (3) David kills the lion and the bear (1 Samuel 17:34-37) — as a shepherd, David tells Saul that he killed the lion and the bear that attacked the flock, showing his confidence in God before facing Goliath. (4) Benaiah kills a lion in a pit (2 Samuel 23:20 / 1 Chronicles 11:22) — one of David's mighty men, Benaiah went down into a pit on a snowy day and killed a lion, a feat that celebrated his courage. — The lion appears more than 130 times in the Bible, being one of the most-cited animals — used symbolically for courage (Proverbs 28:1), the power of royalty (Genesis 49:9, Judah), divine judgment, and Christ Himself (Revelation 5:5); a native animal of the ancient Palestinian region until the 13th century, now extinct there.