Venusaur is the evolved form of Ivysaur. He has 800 health and all the same attacks as his previous forms. There is a big difference in his appearence. He is now MUCH larger in size and his flower has completely sprouted. His new move is Solar beam.
Venusaur still has Leechseed, Tackle, Poisonpowder and Razorleaf however he has a new added move named "Solar Beam." It takes 2 seconds to charge up and then Ivysaur sends a sparkly blast of yellow at his opponent. However it is not his strongest move. In fact it is weaker than Poisonpowder. However it is strong enough to send somebody flying high into the sky.
He does not evolve into any pokemon.