Bengal kitten doesn't understand water in a glass

The title to the video is "Curious Cat Examines Glass of Water". It is slightly misleading. It seems clear to me that the Bengal kitten does not understand that this is water. He knows water but when it is in a glass, he is unsure about it. This is because he is young and learning. He prods, pokes and sniffs it to test it. It is quite cute. It does tell us too that sometimes the reason why cats prod water is to test it. 

Bengal cat checks out water in a glass as he is unsure. Screenshot.

Some people think that cats drink better from clear bowls. Cats are poor drinkers because of their wild cat inheritance which is why dry cat food is problematic. Cats get a lot of their water from prey animals. The mouse is 70% water. Dry cat food does not replicate normal prey. Cats don't compensate sufficiently by drinking more water and become dehydrated.

Note: This is a video from another website. Sometimes they are deleted at source which stops them working on this site. If that has happened, I apologise but I have no control over it.