Excuse me, how are some pictures of animals with black background taken?

The biggest feature of photography is that photographers have to be there.

So, no good photos came out later.

In the picture above, you use the same principle as some flowers and plants on a black background.

Let the subject shoot in the sun (or a brighter place)

Then choose a darker color or shadow as the background. You can also use black objects as artificial backgrounds.

Finally, use a slightly larger aperture to appropriately reduce the exposure compensation. Let the background turn black because of underexposure.

If the background of the photo is not dark enough, you can draw the curve appropriately and adjust the contrast later.

You can practice with flowers and other plants first, and then practice shooting animals after you master them.