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PawSteps · Pets on the Green

Normal and Abnormal Behaviour

The same behaviour can be normal in one species and a warning sign in another. Twenty to work through.

The two definitions

Normal behaviour
The typical and usual behaviour an animal should be showing.
Abnormal behaviour
Unusual and irregular behaviour that is not normal for that species.

Those last three words carry the whole unit. Lying on your back is a crisis in a rabbit and a normal moult in a tarantula. Eating your own droppings is a warning sign in a dog and a nutritional necessity in a guinea pig. You cannot judge a behaviour without knowing whose behaviour it is.

Normal or abnormal for that species?

Twenty behaviours. Decide, then read what a keeper would say. There is no score and nothing to fail — the explanations are the point.

Horse

Standing in the stable doorway swaying its head and neck from side to side, shifting weight foot to foot, for long stretches.

Horse

Chewing the top of the stable door and wooden fence rails.

Horse

Kicking the stable wall repeatedly, often around the same time each day.

Horse

Lying down and rolling in the field, then getting up and shaking.

Guinea pig

Repeatedly hopping and twisting in the air with all four feet off the ground.

Guinea pig

Eating its own droppings straight from underneath itself.

Guinea pig

Chewing the hair off its own flank, or off a cage mate, leaving bald patches with intact skin.

Bearded dragon

Slowly raising one front leg and waving it in a circle.

Bearded dragon

Running along the front glass, scrabbling at it, over and over.

Royal python

Has not come out of its hide for four days and its eyes look cloudy and blue.

Royal python

Striking at the glass whenever anyone walks past.

Mexican red knee tarantula

Lying motionless on its back with its legs curled up.

Chinchilla

Rolling frantically in a container of fine dust.

Degu

Gnawing continuously at the cage bars.

Fancy rat

Grinding its teeth together, and its eyes are bulging slightly in and out.

Ferret

Bouncing sideways, arching its back, bumping into things, mouth open.

Chicken

Digging a shallow hollow in dry earth, lying in it and flicking soil through the feathers.

Big cat or captive carnivore

Walking the same route along the front of the enclosure, turning at the same two points, for hours.

Rabbit

Sitting hunched and still in a corner, not eating, not producing droppings.

Madagascar hissing cockroach

Making a loud hissing noise when picked up.

Monitoring and recording

Monitoring
Observing and checking an animal over a period of time.

HowHealth checks · visual checks
Recording
Keeping track of the history of an animal's activities.

HowDatabases · paper records

Why records matter

The honest version: most abnormal behaviour is spotted as a change, not as a single dramatic event. Without records there is nothing to change from.

The poster task

Choose two animals from the groups below. They cannot both be from the same group.

Group 1
Large animals
Group 2
Exotics
Group 3
Small domestic mammals

Animal 1

Animal 2

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Tool for this unit
🔍 Ethogram recorder ›
Set up an observation, tally what the animal actually does, and see how it spends its time. Nothing is saved — copy your results out before you leave the page.