One of the original limiting factors on the amount of armor a knight could wear was the weight his mount could carry. As warmbloods (draft horses crossed with Arabian-descent horses) were developed, knights got larger horses that could carry more weight and still be useful in battle, allowing for the knight to wear more armor.
Horses did not live whith Knights.
they fighted on horses
tall and strong ones like quarter horses. Depends on the knights.
knights rode horses like any other person would ride a horse
Horses
Friesian horses were popular war horses, and mounts of knights. For the Howrse game for Archimedes the answer is "for carrying knights".
The squire. The squire would carry the knights weapons or armor, hold any prisoner the knight might take, protecting the knight, and take care of the knights horses.
Knights' horses often wore protective headpieces called chanfrons or armored horse masks. These were designed to protect the horse's head and face during battles or jousting tournaments.
Horses were important to knights. In fact special heavy horses were bred for them.
Seeing as to how each side starts with two knights (horses) there are four knights at the start of the game. If a pawn is promoted to a knight there can be more than four knights on the board, but this doesn't usually happen.
Sea horses are small fish that have armored plates. There are about 50 different species of sea horses around the world
They were the "Excalibur Knights" or "Knights of the Round Table."