Easter Eggs and Hidden Details in Hogwarts Legacy.
Pet Cats

You can pet Cats throughout the game.
Singing Flowers

The yellow flowers you can find all around the open world are called Honking Daffodil and they make funny noises when you get close to them.
Kreacher

Kreacher from Harry Potter movies is visible in this painting in basement of the Library in the Hogwarts.
Zonko's Joke Shop

Check out Zonko's Joke Shop in the Hogsmeade for funny items.
Teddy (Fantastic Beasts)

There is a cute little reference to the Fantastic Beasts movies on top of a hill in north of the Hogsmeade.
Sword in Bonfire

Way up in the map and right next to the Inferi Lair there is a bonfire with a sword in it. It's a reference to the Coiled Sword in the Dark Souls game.
Funny Guards Fight

One of these two guards gets angry after getting annoyed by the other one and attacks him.
Dragon hedges

Dragon hedges (Grass Dragon - Leaf Dragon - Dragon Bush) can be found making noises and doing funny animations all over the world.
- They don't move or attack but if you cast attack spells on them it makes them angry.
Indiana Jones

Skeleton of death Indiana Jones can be found behind the one of the symbol puzzle doors while exploring the cave with Poppy in The Centaur and the Stone side quest.
- Indiana Jones is the main character of the Indiana Jones movies.
Great Lake of the Forbidden Forest

Great Lake of the Forbidden Forest where Harry saved himself in the Harry Potter movies can be found next to the Jackdaw's Tomb flame floo.
- Jackdaw's Tomb flame floo is way high up the map in the forest.