Snakes have no vocal cords and therefore do not talk (nor make any other sound). The only kind of sound they can make is a hissing sound and that is caused by them forcing out air rapidly from their nostrils or mouth.
If this is true, how did God create a talking snake?
Probably scent. But of course, snakes do not "talk."
Snakes cannot talk, therefore how can they have a lisp?
They can't literally...
It seems he inherited this ability from Salazar Slytherin.
Of course haven't you seen Harry Potter
Harry Potter can talk to snakes. He loses this ability after the Horcrux inside him is destroyed.
Talking to snakes in the Harry Potter series is known as 'Parselmouth' or 'Parseltongue.'
I'm not sure why people talk to snakes, but snake charmers play music to snakes. The reason why they do this is because the music brings suspense to the crowd. The real thing is just the taunting swaying that the charmers do while working with cobras.
No. The only real communication that most snakes use is pheromones which are chemicals that snakes of opposing genders find 'sexy.' Emission of these pheromones signals 'I'm ready to mate.' Otherwise, most snakes are solitary and have no reason to communicate.
They can talk to snakes.