No -- you are not even a wizard, on the first place.
There actually is no Animagus spell. It is never actually told how to become an Animagus, so thus no one will be able to answer your question. Sorry.
Sirius Black transforms into a dog using the Animagus transformation. His Animagus form is a black dog and he is known as Padfoot.
Rita Skeeter, the reporter. Her Animagus form is a beetle
No, he isn't.
a beetle
"Animagus" is a portmanteau word, dropping the last letter of "animal" and overlapping the previous two with "magus", meaning "magician".
No, he is not an Animagus, if that is what you mean.
Neither are animagus'. Moony is Remus Lupin the werewolf and Prongs is James Potter's (Harry's father's) patronus.
Her animagus is a tabby cat.
By pressing the same button that you used to turn into an animagus in the first place.
Blood-sucking bat.
Harry's father, James, did. James was an animagus and transformed into a stag. So Harrys Patronus Charm is a stag, so it was based off his fathers animagus from.