Dead goldfish...

A neighbour spots a little girl digging a big hole in her back garden. He says "Hello Lara luv, what are you doing there then?"
The little girl answers "I'm burying my goldfish"
Neighbour: "Oh dear, what a shame. Still, it's only a goldfish I suppose in't it? But why are you digging such a big hole you silly thing?"
Little girl:

Spoiler:

"Because it's inside your cat!"