Yes, chairs will lay eggs that, if fertilized by another chair, will hatch into a baby chair, called a "stool". Baby chairs resemble their parents but with a shorter back rest and fewer legs. These babies will eventually undergo a process of metamorphosis and grow an additional fourth leg, marking their entry to full adulthood.
Yes! Chairs are monotremes, which lay eggs and then nurse the hatchlings until early adulthood.
