Its 'blowing' the spider back out that really freaked me out One of mine will grab a spider and then shake their head violently until it comes out again when it is usually half dead so I have the pleasure of disposing of them (the spider that is )
Rucksack will do the same to bumble bees but will sometimes also eat them

That made me laugh! I had a cat that would catch huge moths and hold them in her mouth and she looked as if she had one of those spinning bow ties as the moth's wings beat furiously!