Dolphins generally get a good press. Many people have swimming with dolphins on their bucket list. We like dolphins! Well I don't!
When people are asked why they like dolphins, they usually quote the old chestnut about dolphins being as intelligent as humans. That is not much of boast in my opinion. Just look at the participants on the Jeremy Kyle Show (Jerry Springer Show for Americans).
Just look around you. Everything that you see that has been manufactured was invented by humans. What have dolphins ever invented? I'll tell you what they haven't invented, a device for identifying tuna nets! Whenever this fact is pointed out, the usual comeback is to point out that the US Navy has trained dolphins to attach mines to the hulls of enemy ships. If they are so smart, why aren't they attaching some of those mines to the hulls of tuna fishing vessels?