Walks Like A Duck Cartoons and Comics

Doctor to nurse about duck: 'Walks like a duck, looks like a duck, but I need some more quacking tests first.'

'Well you certainly walk like a duck and quack like a duck.'

'Oh, he walks like a duck and talks like a duck, but he's still a turkey.'

'If it walks like a duck, quacks like a duck, looks like a duck, it' actually a gene-modified flounder.'

'Nowadays, if it walks like a duck and quacks like a duck.... It may be Bill Maher!'