Over 500 people have "liked" this video, thinking it's cute. But what I see is a tired and miserable bulldog pup, desperate to sleep, who has to keep propping himself upright in order to stop his airways blocking. A hat-tip to Heather Houlahan for sending this one to me.
This is way more common than most people realise - just search on YouTube for "[brachycephalic breed of your choice] falls asleep standing up". It's not always because of blocked airways - you'll also find videos of other breeds falling asleep - but you should be able to spot the difference.
Here's the one we featured in the sequel to Pedigree dogs Exposed. Warning: it's accompanied by comedy sound fx.