For the particular study where we tested this, we did underwater playbacks with underwater speakers to see how the animals react and actually were able to see the animals because we were holding them at the time in a net corral.

NPR: Study: Dolphins Call Out Their Own Names

"It's now getting to the point where enough companies have been intimidated and have refused to transport animals that we can see a potential worldwide impact of having problems of transporting animals between labs that will massively impact on the collaborative nature of research and will slow research progress, " he said.

BBC: Activists' pressure 'slowing animal imports'

"We're going to see more animals hit the levees, trying to get out of there, " Ribbeck said.

CNN: Wildlife rush for high ground in flood areas

"One of the fundamental questions that neuroscientists are facing today is how we link the activity of individual neurons to the complex behaviours that we see in whole organisms and whole animals, " said Dr Ben Whalley, a neuroscientist at Reading.

BBC: Rat-brain robot aids memory study

If animals voted we would soon see a vastly different world.

ECONOMIST: Going global

And that whole system reminds us so much of a situation in which humans use names that we were really curious to see whether these animals really do recognize the actual shape of that whistle as carrying the information of identity.

NPR: Study: Dolphins Call Out Their Own Names

As we watch the confrontation from safely inside the Land Rover, I realize what makes getting out of the car so special: Down on the ground, walking, where we'll spend the bulk of this safari, you have to earn what you see by following animals through the bush and approaching them gingerly so they don't bolt.

WSJ: Walk With the Animals