SO's whippet Leo(nardo) is currently recuperating.
We recently discovered that, while he does not chase random cyclists, he will run with me while a'wheel. After a couple of kilometres (in short bursts; he is, after all, a whippet) of chasing - and being chased - he is absolutely k'nackered. This means we will have peace until late afternoon, when it will be time to take him to the park to run around with his mates.
Whippets, at least this one, can be summed up in four words: run, eat, sleep, fart.