The first minecraft mob was the "Creeper," which was unintentionally created due to a coding error while the game's creator, Markus Persson (Notch), was trying to design a pig. This iconic creature has become synonymous with Minecraft, known for its green appearance and ability to explode when close to players. The Creeper's unique behavior and design have made it one of the most recognizable elements of the game.
The first mob in Minecraft was the Human, which could be spawned by pressing G and looked like Steve. It was later removed in Classic.
Go to minecraft wiki and do a search for "mob grinder" and it gives you a tutorial of how to do it.
You cant find a giant mob in vannilla minecraft but you can sumon him using a command or a spawner.
no
a bat
Mobot
by using spawn eggs or mob spawners with a mob in them
witherboss
a monster mob in minecraft
You can get a mob spawner in Minecraft by using any pickaxe (except wood) with Silk Touch 1 enchantment or by spawning it in (Dec:52).
Horses are not a mob yet in Minecraft, but they are available on Mo' Creatures.
The mob with the most HP in Minecraft would be the enderdragon. The Iron Golem which is a mob you can summon or craft also has 100 HP and is very powerful killing zombies, skeletons, spiders, and slimes.