Cryptic clue for an emotion, no length given

[annaojbee]

Hi
New here and desparate. I've been given a cryptic question to solve before midnight. The answer is an emotion. The clue is:
Was it the death of the feline?
Please help!

[Mamyalynne]

Curiosity

[slaney]

Curiosity - killed the cat.

[rojash]

...although it's pushing it a bit to class curiosity as an emotion.

[slaney]

As curiosity is described as a strong feeling of wanting to know or learn, it could be described as an emotion.

[rojash]

By that definition you could class almost anything as an emotion.
I can just see it in dram class "right students, now I want you all to practice emoting that you have a strong feeling of wanting or needing to poo".

[rojash]

^drama!