Sorry, but Entei can not be obtained in Pokemon Diamond and Pearl itself, you must transfer it from old GBA games and use the Pal park in DP to catch him.
To get them, transfer them from Pokemon Fire Red and Leaf Green.
Eterna City pokemon center. The first chick by the door if I recall correctly.
Munchlax is a 4th Gen Pokemon and therefore made its debut in Pokemon Pearl and Diamond. It can also be obtained in every pokemon game that came after that.
Yes if you want it on pearl
In Pokemon Diamond/Pearl, you find a old man at route 212 with a Leafeon.
You have to migrate it from Pokemon FireRed, LeafGreen, or any other Pokemon game that you happen to have an Entei in. Entei can't be caught in Pokemon Diamond or Pearl. Sorry.
Piplup is obtained as a starter in Diamond and Pearl or through trades.
you cant catch entei on Pokemon pearl. entei is a johto Pokemon and Pokemon pearl is a sinnoh game. the only way to getentei is to trade it over from another game games compatible are Pokemon diamond, Pokemon platinum, Pokemon soulsilver and Pokemon heartgold. the last two i am sure you can get entei. (i have seen it in the wild)
if you want Entei in Pokemon Diamond/Pearl you'll need a Pokemon FireRed/ LeafGreen that you started out with Bulbasaur. In FireRed/ LeafGreen if you started out with Bulbasaur [Grass-Poison] after you defeated the Pokemon and if you run into Entei in the wild capture it and migrate it into to Pokemon Diamond/Pearl through Pal Park. If you want to migrate in Diamond/Pearl you'll need to see all 150 Pokemon yes both Dialga and Palkia. You'll see Dialga in Pearl from an elderly woman who's shows you its picture and the same with Palkia in Diamond from the same elderly woman in Celestic Town. This adds its data to your Pokedex and less Pokemon to see in Diamond/Pearl.
trade it from soulsilver
You have to migrate from Sapphire or Emrald.
Put Honey on a tree
Depends on the game. In FireRed and LeafGreen, you can find him/her wandering around in grass somewhere, being a moving pokemon. You can only get Entei if you chose Bulbasaur as your starter. You will have to migrate it to Pokemon Diamond, Pearl, and Platinum in the pal park if you want it in Diamond/Pearl/Platinum. I hope that helped! ^^
To get them, transfer them from Pokemon Fire Red and Leaf Green.
Misdreavus cannot be obtained on Pokemon Diamond, so you must trade one from Pokemon Pearl.
entei is a roming Pokemon of Johto. to catch it u have to chase it. if u run or use your bike it will run somewhere else. it is similar to catching Mesprit in Pokemon Diamond,pearl,or platinum.
migrate