NAVLE Behavior

Feline Aggression Study Guide

Feline aggression is the second most common behavioral problem in cats after inappropriate elimination and urine marking, making it a high-yield topic for the NAVLE.

Overview and Clinical Importance

Feline aggression is the second most common behavioral problem in cats after inappropriate elimination and urine marking, making it a high-yield topic for the NAVLE. Approximately 27% of cats relinquished to shelters for behavioral reasons are surrendered due to aggression. Understanding the classification, diagnosis, and treatment of feline aggression is essential for general practitioners, as cat bites and scratches carry significant infection risk (higher than dog bites) and can transmit diseases including cat scratch fever (Bartonella henselae).

Cats have five potential weapons (teeth and four clawed paws) compared to dogs' single weapon (mouth), making aggressive cats particularly dangerous. The key to successful management lies in accurate identification of the aggression type, ruling out underlying medical conditions, and implementing appropriate behavior modification with or without pharmacological intervention.

Type Characteristics Key Clinical Features
Play Aggression Most common in young cats and kittens; involves stalking, pouncing, biting Cats raised without littermates; hand-reared kittens; lack of appropriate play outlets
Fear-Related Defensive response to perceived threat; cat feels trapped without escape option Dilated pupils, flattened ears, lowered body, tucked tail, piloerection
Redirected Cat aroused by inaccessible stimulus attacks nearest target; most dangerous type Arousal can persist hours to days; uninhibited bites; often triggered by outdoor cats
Petting-Induced Approximately 40% of feline aggression cases; cat bites during or after petting Preceding signs: stiffened body, tail twitching, ears rotating back, dilated pupils
Territorial Defense of territory; often emerges at social maturity (2-4 years) May occur when new cat introduced or resident cat returns from vet (smells different)
Intermale Fighting between intact males; facilitated by testosterone Castration prevents or eliminates in most cases regardless of age or experience
Pain-Induced Self-protective response; occurs during handling of painful area Arthritis, dental disease, otitis, dermatologic conditions common causes
Predatory Instinctive hunting behavior; silent stalking, pouncing on moving targets May be directed at small pets or human body parts (feet moving under blankets)
Maternal Queen protecting kittens; hormonally driven Self-limiting as kittens mature; minimize nest disturbance

Classification of Feline Aggression

Feline aggression can be classified based on target (human-directed vs. cat-directed), motivation (offensive vs. defensive), and context. The most clinically useful approach combines all three elements to guide treatment.

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