A smart trainer can theoretically train any behavior that an animal is physically able to perform and mentally able to understand.
The folks at the New England Aquarium are taking this task seriously, and they’ve been training all sorts of behaviors to some of the most unlikely species! They’ve recently been working on target training with some of their lobsters.
Here’s a video, the quality of the video isn’t great, but it’s easy to see that the lobster is already understanding that it should approach the target after just a few training sessions! I’ve talked in the past about some of the benefits of target training, it’s a great first behavior to work on and can be expanded later to help train other behaviors.
You can read more about this and other animals on the aquarium’s blog.