I have been collecting pets on a ranger for the first time--I've been here since launch, but ranger was never a profession I spent a lot of time with. As I travel, it has dawned on me that there are many, MANY animals in Tyria that have no juvenile form, which ought to. For instance, the Elonian spotted hyena and mountain hyena. The central Tyrian hyenas we can tame look like they have severe mange... which is cool in a way, but I wish we could also tame the other two (healthy looking) species. I have compiled a brief list of animals that are not available in juvenile form, and I think they ought to be. I am requesting that Arenanet add at least some of these animals as ranger pet options. Look at the list and feel free to add any you'd like to see.
Giant Beetles (there are many kinds)