Animals have emotions!

You all must be aware of the fact that animals do have feelings. But do you know to how much extend they have feelings?
Here's a video I found on youtube and its damn moving. I was weeping in few of the scenes. They show the actual footage of animals showing emotion of empathy, grief, love, alertness and what not.

I just don't understand why we humans have to perform experiments or observe wildlife? Why is there a need. just leave them alone in their natural habitat. I can understand wildlife photography.
But now we have different field and organisation of million dollars which is based on wildlife itself. I just hope they remain safe and we can help the needy animals as much as possible.
By the way hope everyone is staying safe and staying home. please follow social distancing as much as possible so that we can come out of this pandemic as soon as possible.
Stay safe, stay home!