The song Hakuna Matata from The Lion King is all about eating bugs when you are a lion. I was wondering if this is actually a real life fact that lions can survive on bugs or did the Lion King makers just make this fact up to make kids less scared of bugs?
Is it possible for lions to survive in real life on bugs?
Yes but he need to eat way more then he can possibly eat in that situation. From cinemablend.com
Lion needs something between 8,000 and nearly 9,000 calories a day. Crickets, according to one example, are 121 calories per 100 grams. This would mean a full-grown Simba would need to eat 24,292 crickets per day just to survive. Of course, just finding that many would probably burn a lot of calories.
While the meerkat and warthog are relatively small, Simba is a growing lion. It's surmised that he'd actually need a greater calorie intake as a growing lion than he would when he grows into an adult. While it appears that the exact calorie value of, say, a cricket, isn't exactly agreed upon, what is clear is that it would take a lot of them for a lion to survive. When you take into account that lions actually sleep most of the time, then it means that Simba would have no time to sing songs, as he'd need to spend every waking second scarfing every grub he could get his paws on. It would be such a volume of grubs, that Timon and Pumbaa would probably end up starving too, as Simba tried to eat everything.
A real life fact that lions can survive on bugs or did the Lion King makers just make this fact up to make kids less scared of bugs?
I think killing other animals might look gruesome so they depicted more of bugs or maybe just for fun, we don't really know.
A large predatory mammal can indeed survive on bugs, generally. Grizzly bears routinely survive for lengths of time primarily on moths. Bears don't survive on them for long stretches of time. But yes, it's certainly possible for an animal like a lion to survive on bugs. They would need to find them in concentrated quantities, but bugs do tend to gather that way, so it's not out of the question.