Not really funny

This is a very ordinary event and may have escaped attention. But I was shocked and surprised. I cannot forget it. It has a continuous presence in my mind although I did not see this incident myself - a visitor threw a chocolate in front of the cage of a bear in Dhaka zoo. The bear for nearly half an hour tried through the small hole of the cage with its outstretched tongue to catch the chocolate and eat it. It looked like the bear brought out his tongue about a foot to reach the item. He finally failed. Nobody helped the bear to get it. People witnessing this would surely have been jubilant at this `funny' scene. But was it a fun? I feel bad when I think how hungry the bear was. Is it not cruelty? This is one example. There are countless incidents of cruelty meted out to the animals and birds of zoo/circus and in other places. Imagine how it would be like if we hear this type of 'fun' made with helpless starving children! Do the authorities of the zoo properly feed captive animal/birds? Do they take care so that the visitors do not disturb the zoo inmates ?
Now I appeal to the animal rights groups- please launch a campaign to stop cruelty to animals and birds. Keeping pet animals should also be stopped except domestic ones. No matter how seriously they take care, the animals/birds in captivity cannot live well. Rather, we can promote natural habitats/safari parks where they would roam/fly freely.