In Wallace and Gromit's "Close Shave" springs to mind; there's loads of sheep in and on their motorbike and side car.
I'd thought of that too but the way you describe it makes it seem more suitable than I thought. I hadn't remembered the motorbike scene: I'd just vaguely imagined them in the back of a lorry or something. So I'll use this one. Thanks.
No problem. I think A Close Shave is the weakest of the W&G shorts, but an enduring image from that one for me is the the sheep pyramid on the motorbike...