I'm not too sure about the slowest growing animal in general but I do know that the Royal or Wandering Albatross take roughly 6-10 years to reach maturity and are therefore, the slowest growing birds on the planet.
The fastest animal on earth is, actually, the peregrine falcon, who can fly up to 200 mph! (mph is miles per hour, in case you didn't know) It is also endangered, so try to help this extraordinary bird!
People be warned don't listen to the retard above me. If all of the doo doo that is leaking out of his mouth was gently tossed out of a plane it could travel at a terminal velocity in the same vicinity of a diving falcon. A peregrine falcon can propel itself at around 55mph. Very fast, but not cheetah fast. Anyone who thinks that a peregrine falcon is the fastest animal is not very smart. The actually fastest animal is a bird called a swift which can PROPEL itself (not assisted by gravity) at around 100mph.
The fastest growing animal on Earth is a Blue whale Calf.
Loon
The slowest growing animal on Earth is the tortoise. Unsurprisingly, they also have one of the longest life expectancies of any animal on Earth, living up to 190 years.
hmm.....toughy, maybe the whale or the elephant?? :s dont quote me on this!
No the slowest animal is ant
the slowest animal in Australia is the sloth
the slowest animal only moves 10 Centimetres per minute
no seahorse are not the slowest animal in the world.
tortise
The three toed sloth is the slowest animal in the world.
The slowest creature in air is the Amarican Woodcock
the 3 toed sloth is the slowest
The slowest animal on water and on land would have to be a competition between the snail and the turtle .
yes they are