Scientists categorize animal behaviour into different categories like instinct, imprinting, conditioning, imitation. 

1) Instinct: 

A) Instinctual behaviours are behaviours that need not be learned. 

B) They are inborn behaviours and can be complex like making nest by birds, choose mates and forming into groups for protection. 

C) Reflexes are also a type of instinct behaviour.

2. Imprinting:

A) Chickens and ducklings are able to walk almost immediately after hatching from the egg. 

B) Duckling can even swim after a few days.

C) They recognise their mother because of a behaviour type called imprinting. 

D) Imprinting lets young animals recognise their mother from a young age. They can follow her for food and protection.

3. Conditioning:

A) Conditioning is a type of behaviour involving a response to a stimulus that is different from the natural one. 

B) It is a type of learned behaviour. 

C) If we take ringing of school bell as an example, student shows different types of conditioning to a school bell as per the time.

4. Imitation:

A) It is a type of behaviour where one animal copies another animal. 

B) Kohler conducted experiments on imitation in chimpanzees. 

C) One chimpanzee tried to take a fruit from a tree. But it failed in reaching the fruit. 

D) Later chimpanzee used sticks to reach the fruit. This time it succeded in reaching the fruit. 

E) Chimpanzee used sticks to spear juicy grubs to eat. 

F) Other chimpanzees copy this behaviour.