When we define intelligence as having the ability to do the things that only humans do, it's no wonder that we can't see intelligence in other species.

Most animals don't have digits they can use to manipulate things with the precision we do. That doesn't mean they aren't intelligent.

There are dogs that have learned to ride public bus and metro systems. They know how to act to be accepted in these scenarios when other animals would not be. They have a sense of where they will be going and what the purpose of the vehicle is. They can use their noses to detect things that we cannot even with our fancy tools, and we even rely on them for their noses when our human tech fails.

If intelligence is the domain of humanity then I'm not so interested in intelligence. I'm interested in whatever it is that allows sentient beings to understand, operate within, and adapt to their environments.