"Hagrid, Mr. Weasley, this is HUGE!" said Harry briskly. "The first thing I need to make you two aware of is that there is a way to discover unregistered animagi."
"Really?" said Arthur, "If that is really true, I will have to inform Madam Bones, the head of the Department of Magical Law enforcement."
Harry placed Wonderous Winged World down on the table and opened it to the crucial paragraph that explained how unregistered animagi can be discovered.
Hagrid and Arthur read.
"Any magical material, object, or artifact that has been created or bewitched to reveal the presence of humans in any confined area can also be used to discover unregistered animagi. This is accomplished by pointing one's wand at the material, object, or artifact in question and saying the incantation "Animagus Reivilo!" After the spell is performed, the animagus's animal form will be stated below his or her name. For example, if a witch named Karen Kitty took the form a cat, then on any material, object, or artifact that showed where humans were present in a confined area, the word "cat" would appear below the name Karen Kitty."
"And the artifact you are holding in your hand is such an artifact as this paragraph refers to?" Hagrid asked Harry.
"Yes," answered Harry instantly, "I've already perfumed the incantation to apply the labels to those people on the map who are animagi."
Harry then plopped the map down on the table next to the book.
Hagrid was looking at the names of the creators of the map and asked Harry seriously, "Where did you get this map?'
"An early Christmas present from Fred and George," replied Harry.
"Where would Fred and George have gotten such an object from?" inquired Arthur.
"They told me themselves that they nicked it from Filch's office when they were first years," responded Harry.
"Well then?" asked Hagrid, "Do you know who Moony, Wormtail, Padfoot, and Prongs are?"
"No," replied Harry, "And I don't care either, we have bigger fish to fry right now."
Next nanosecond, Harry used the map to show Hagrid and Arthur that Peter Pettigrew was a rat animagus and was asleep in Hagrid's Hut and that Sirius Black was a dog animagus and was asleep in the Forbidden Forest.
Hagrid emitted a loud screech and said loudly, "You mean Peter Pettigrew is alive and IN MY MILK JUG!"
"Yes," said Harry clearly, "And for the time being at least, is imperative that he not escape. We need to apply an Anti Breaking Charm on the milk jug."
Next nanosecond, Hermione had raised her wand and performed said Anti Breaking Charm on the jug faster than a cheetah chasing its prey.
"Oh, thank you, Hermione," said Hagrid in a relived voice, "Even though I'm a teacher, I still don't actually have a proper wand you know."
"You must obtain one as soon as possible," said Arthur sharply, "Care of Magical Creatures may not require much wandwork, but all teachers should carry a properly functioning wand on them at all times. OHHH!"
"What is it Arthur?" asked Hagrid.
"He's realized, as Harry, Ginny and I did earlier, that Sirius Black is innocent," gasped Hermione.
"The clues all fit!" squealed Hagrid, "We always though Sirius betrayed James and Lily and that Peter went after Sirius, but it was the other way around, Peter betrayed James and Lily and Sirius went after Peter!"
"Pettigrew framed Black," said Arthur in a low voice, comprehension drawing on his face.
"Yes," said Hagrid.
Arthur looked Hagrid eye to eye and said, "You stay in here and watch that milk jug. If Pettigrew somehow does manage to escape from the milk jug, I want you to stun him immediately."
"I will," promised Hagrid.
"Harry, you watch that map every nanosecond while I return to the ministry and fetch Madam Bones. You keep an eye on Sirius Black. If he wakes up, fine, but if he leaves the forest, then chase him and stun him."
"Got it," replied Harry simply.
Less than half an hour later, Arthur returned with Madam Bones, who was carrying two full vials in her hand.
Arthur took the map from Harry and saw to his relief that Black was still asleep in the forest.
"Good morning, Hagrid, Mr. Potter, Miss Granger, and Miss Weasley," greeted Madam Bones cheerfully, "We have a lot to do and I've brought Veritasiurium here to ensure we get some needed truths. But first, Mr. Potter, why were you reading a bestiary on creatures of flight in the first place."
"I was trying to find something that might help Hagrid with Buckbeak's trial," answered Harry matter of factly. "
"Who is Buckbeak?" asked Madam Bones.
"A hippogriff of Hagrid's who is on trial for attacking a student, though the full story-
"Hagrid, Arthur, you two keep watching the jug and the map respectively," ordered Madam Bones urgently.
Hagrid and Arthur both nodded firmly.
"Mr. Potter, Miss Granger, and Miss Weasley, " requested Madam Bones, "I would like you three to accompany me to the Room of Requirement."
"What is the Room of Requirement?" asked Harry and Ginny in confused voices.
"A room that only appears when someone has real need of it and it always equipped for the needs of those who find it," piped up Hermione.
"How did you know that, Miss Granger?" wondered Madam Bones.
"I read about it in, Hogwarts a History," said Hermione smugly.
"Well at any rate, I will be leading us to the Room of Requirement for the use of a pensive and private discussion," explained Madam Bones.
Madam Bones, led Harry, Hermione, and Ginny into the Room of Requirement and then into the pensive she'd asked it to create.
After explaining what a pensive was and how it worked, Madam Bones turned to Harry.
"Harry, can you please show me the memory of the incident in which this hippogriff of Hagrid's attacked a student? If the hippogriff is innocent, I want to know. Bear in mind that hippogriffs should NEVER be insulted or provoked. If you can show me evidence that insult or provoking was a factor in the incident, I will use my power of Head of the Department of Magical Law Enforcement to overrule the Committee for the Disposal of Dangerous Creatures, cancel the trial, and declare the hippogriff free. If this proves to be the case, I may also wish to speak with the student in question, if appropriate."
"Okay," said Harry.
Next nanosecond, Harry, Hermione, Ginny, and Madam Bones were viewing a memory of Hagrid's very first Care of Magic Creatures Class.