I think it’s interesting because it just like human’s emotions (Lorens)

Beluga whales create their own “toys” by blowing bubble rings and playing with them. We can see lots of kids playing bubble gun in parks, so maybe they have intelligence that higher than a 7 yrs old kid, it’s amazing!

I feel the rats experiment is very interesting. Because I thought rats are very independent，they don't have emotions that depends on relationship. But in that experiment shows they have helpful behavior because they can feel other rats‘ emotions.

It’s similar to human friendship because people may feel their friends’ emotions and empathize them. Moreover, parents give their knowledge to their kids and protect them.