Ah, there’s so many! D:
Here’s some vegan blogs specific to tumblr:
garden-of-vegan, icookvegan, wtfdoyoueatvegan, veganpizzafyeah, anotherveganpunk, veganfoody, sweetveganista, closetvegan (doesn’t post any more, but the old recipes are still good), yummyvegan, yackattack (favourite!), findingvegan - I think every vegan on tumblr follows findingvegan anyway.
As for non tumblr ones ohsheglows is the best. :) And of course chocolatecoveredkatie - she makes desserts that are healthy and taste AWESOME! A new favourite is maplespice and I’ve been following veganinbrighton for a whole, too. :)
Man, it took me a long time to add urls to all of those. Be thankful, anon! ;D