It's sad to say that many typical zoo visitors, and maybe even some zoo enthusiasts, may find some very common zoo animals somewhat "boring", just due to their behavior.
Big cats, especially lions and tigers, are definitely one of the most commonly-found animals in zoos. We all know that. Despite how beautiful, regal and majestic these creatures are, the cats are among the laziest animals on Earth. I know I do, and I'm sure most people do too, only see these marvelous but dangerous apex predators just laying there in their exhibits, barely showing any signs of movement or activity whatsoever, causing visitors to just catch a quick glimpse at them and then just walk away, without really stopping to appreciate how amazing these animals really are though. The great news about this, despite of course how inactive lions, tigers and most big cats are, is that they are still so popular and people still love to see them in captivity, even if they are just sleeping there, showing no fun activity. It still kind of surprises me though, in a good way, as I'd normally expect a normal zoo visitor just to simply look at a big cat for like ten seconds, than just walk away without a thought. It's wonderful that so many people still appreciate the big cats even though they rarely pretty much tend to amuse people at the zoo with their activities.
The same kind of goes to reptiles in zoos, particularly snakes, as most of the time, they're just coiled up under a log or a rock or something in their exhibit, fast asleep, almost out of view from the visitors. In fact, I'd say that snakes show far less activity than lions and tigers, yet still people love to go to their local zoo and see them, not minding what they're doing as the visitor is seeing them.
I personally think that it's so great that some of the most inactive zoo animals are still some of the most popular. I also don't think that any zoo animal is really "boring" to see. I love watching lions tigers, snakes, lizards, crocodilians, owls etc., like many other people here, even if the animals are just sleeping and showing no activity, you can still watch and appreciate and like these animals for what they are, even if they aren't giving you a show.