BENGAL TIGER Physiology
BENGAL TIGER – PHYSIOLOGY
Bengal tigers (Panthera tigris tigris) possess powerful anatomical and biological traits that make them apex predators and highly adaptable mammals. Below is a detailed breakdown of their internal and external physiology.
1. Size & Build
Body Dimensions
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Male weight: 180–260 kg
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Female weight: 100–160 kg
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Length (nose to tail): 2.7–3.1 m for males; 2.4–2.6 m for females
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Shoulder height: ~90–110 cm
Body Shape
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Strong shoulders and muscular forelimbs for tackling prey
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Flexible spine enabling sudden leaps and rapid twisting
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Long tail for balance during fast turns
2. Muscular & Skeletal System
Muscular Structure
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Dense forelimb muscles for overpowering prey
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Powerful jaw muscles generating strong bite force
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Hind legs built for explosive acceleration and leaps of up to 10 meters
Skeleton
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Lightweight but robust bones
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Rotating forelimbs allowing tigers to "grab" prey
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Flexible vertebral column for stealth movement
3. Skin, Fur & Coloration
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Fur is orange-brown with black stripes, unique to each tiger
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Belly, inner limbs, and throat are white
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Stripes act as camouflage in grasslands and forests
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Dense winter fur in colder regions (north India, Nepal)
Skin
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Elastic and tough, helping resist injury during hunts
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Pigments in the skin create stripe patterns—not only in fur
4. Claws & Paws
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Retractable claws up to 7–10 cm long
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Thick paw pads that muffle sound
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Large paws (up to 14 cm wide) help distribute weight and allow silent stalking
5. Teeth & Bite Force
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Total teeth: 30
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Canines: up to 7.5 cm long
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Carnassials act like shears for slicing meat
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Bite force: approx. 1,000 psi, strong enough to crush bone
6. Senses
Vision
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Excellent night vision, 6× better than humans
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Reflective tapetum lucidum layer in eyes increases low-light sensitivity
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Good motion detection
Hearing
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Highly acute; can hear frequencies several octaves above human range
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Rotate ears independently to locate prey
Smell
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Moderate compared to dogs, but effective for territory marking
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Use Flehmen response (curling lips) to analyze scents
7. Cardiovascular & Respiratory System
Heart
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Large, powerful heart supports bursts of speed and strength
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Strong cardiac output for long-distance roaming
Lungs
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High lung capacity helps maintain stamina during fights or hunts
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Efficient oxygen exchange supporting short sprints (40–60 km/h)
8. Digestive System
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Designed for strict carnivory
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Short intestines optimized for digesting meat
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Strong stomach acids capable of dissolving bone fragments
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Can consume 25–40 kg of meat at once and store fat reserves
9. Nervous & Endocrine System
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Highly developed brain regions for:
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Spatial awareness
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Coordination
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Hunting strategy
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Strong adrenaline response allows explosive bursts of power
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Scent-marking hormones regulate territorial behavior
10. Reproductive Physiology
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Females sexually mature at 3–4 years; males at 4–5
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Estrus cycle lasts ~3–9 days
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Gestation period: ~105–112 days
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Litters of 2–4 cubs
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Cubs born blind; eyes open after 6–14 days
11. Thermoregulation
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No sweat glands except in paw pads
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Regulate body temperature through:
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Panting
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Seeking shade
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Resting near water
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Often cool off by swimming—Bengal tigers are strong swimmers
12. Adaptations for Strength & Stealth
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Striped coat for camouflage
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Soft-padded paws for silent stalking
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Low-frequency growls and roars that travel long distances
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Exceptional agility despite large size







