Animals in a restaurant

There's these animals in a restaurant. The waiter comes over at the end of the night ...

The skunk says 'Don't look at me, I haven't got a scent'

The duck says 'Just put it on my bill'

The cow says 'You'll have to ask one of the udders'

The deer says 'I had a buck last week and I'm expecting a little doe soon'

The giraffe says 'Well, I guess the high balls are on me then'