Did you know?

Nope.

Did you know that every grass Pokemon from gen. I to IV is able to learn Swords Dance?

Did you know that Emolga is the only Electric Rodent Pokemon (which also includes Pikachu, Raichu, Pichu, Plusle, Minun and Pachirisu) to have a name change in the English translation, the only one with two types and the only one not in the Fairy egg group?

Nope .
Did you know that every professor in the games is named after a type of a tree? (Oak,Elm,Birch,Rowan,Juniper)

Yes,
Did you know that in all Teddiursa sprites, he is either licking or sucking his paws

Yup .
Did you know that in Gen.I Lickitung couldn't learn Lick ?

Yeah.
did you know that sinnoh was the only games where the prof isnt from the start town/home town?

No (Well actually i did but i never really thought about that )
Did you know that the Nidorino that appears in Professor Oak's introduction in Red and Blue has the cry of a Nidorina ?

Did you know that Spinda is the only Pokemon that can naturally have Tangled Feet as an ability that is not a Flying-type?

Very Interesting!

Did you know that it is possible to capture 200-230 pokemon in White and Black?

That's pretty basic,so yea .
Did you know that when the show was first being planned, Ash was originally going to be given a Clefairy. It was switched out at the last minute with Pikachu.
(Btw while i'm on the subject of anime edits ,in the Japanse version of the anime, Misty had genuine romantic feelings for Ash. This is edited out altogether in the English version.)

Maybe because Clefairy is too focused towards girls.

Did you know that Cyndaquil is the only Fire-type Starter Pokemon that doesn't gain any secondary types through evolution?

Yea ( He is one of my top Pokemon so ofc i would know something like that ....and i was checking Bulbapedia yesterday and noticed that, too :P )
Did you know that Oak was intended to be a trainer in Red and Blue ,and his Pokemon would've been almost exactly the same as Gary's from FireRed/LeafGreen ?

Did you know that Skuntank is the only non-Fire type Pokemon that learns Flamethrower by level-up?

Not really , it's not a very used Pokemon so i never bothered checking.
Did you know that before the 3rd generation, Voltorb & Electrode couldn't learn any Electric-type moves by leveling up.

Did you know that the Legendary mascots of Black & White, Reshiram and Zekrom are the only version mascot Pokemon to have more than one signature move?

In Reshiram's case, it is Blue Flare and Fusion Flare.

In Zekrom's case, it is Bolt Strike and Fusion Bolt.

Yeah,
Did you know Pigdey was originally going to be called Pidge?

Really? I had no idea!
Did you know that Alakazam has an IQ of 5000?

Did you know that in Gen 4 Kirlia couldnt learn Will-o-wisp throuhg TM but it can through breeding?

And speaking of moves...

Did you know that prior to Gen IV, Zubat and Golbat couldn't learn Fly?

No.
Did you know that Emboar can learn a water move Scald?