This week I was attracted by an article about dolphins. She's sad about the new research in dolphins.
https://steemit.com/hive-109160/@sarahjay1/scientists-find-signs-of-alzheimer-s-in-the-brains-of-three-different-dolphin-species

It's a pity that such a terrible Alzheimer's disease is slowly but surely passing to animals. I would like to have fewer diseases in the world at all.

I didn't know that some cetaceans take care of their fellows. Interesting fact.