If cat is known for their ability can sleep at anywhere as they want, then giraffe might be the animals have most difficulty in sleeping and you probably don’t even catch a giraffe sleeping. The fact is giraffes have the shortest sleep requirements of any mammal, sleeping an average of just 30 minutes per day. Hence, if you want to have some shots of giraffe sleeping, you know a lot of patience.
As the tallest animal, it is difficult to lie down or get up quickly, sleeping is a huge liability. And due to their long necks, no matter how they look like in the photos, it seems quite uncomfortable to most of us. We might even think how they can fall asleep when their necks bent like these. But this is actually how giraffe sleeps. :D