Bulbasaur is my favorite Pokemon, Venusaur is not as cool. It really bothers me whenever I see a more realistic take on the Bulbasaur line as a frogs. I dont care for frogs, and I really like Bulbasaur, so therefore he isn't a frog. Not to mention he has "saur" in his name, which means lizard. I really ran with the lizard idea and he ended up like a cross between a Horny Toad and a Scutosaurus. The way I figure it is that they have an endosymbiotic relationship with a very large type of flower. The flower reeks of death, the fumes can even be toxic and keeps large predators and competition away; however it attracts insects which brings food for the young Bulbasaurs. Venusaur is 6'7", though are actually taller as their flowers can vary in height and are not measured. They also use their tusks to dig up roots much like wild boar. Bulbasaur is the best.