I think anyone who owns a non-aquatic pet will talk to them. Who knows, maybe people who own fish will sit in front of the aquarium and talk to their fish.
But insofar as other pets are concerned, sure, I talk to them.
One of the foremost reasons I have pets is because I am so reclusive and silent and owning the dog and the parrot guarantees that I'll use my vocal cords several times a day.
Most pets are pretty simplistic. they have the capacity to recognize certain sounds thru repetition, and are driven by the acquisition of food. However, they are social animals and need interaction and stimulation.
I have to count myself in that equation because, I, too, am an animal and need interaction. A person's mind can become seriously warped if kept in isolation too long. And since I have a tendency to be so quiet, I deliberately got a dog (I inherited the bird). They force me to be social with them.
They have kept me sane and whole. Bless them. I adore them.