What an odd question! Sounds like something someone would say in their sleep! My guess is Bulbasaur
Go to the Snowy Village or whatever you call it, and go to a tree that can be tackled, get a Pokemon that can tackle it, tackle the tree, and a Delibird will fall out!
those yellow tree are Honey Tree, you put some honey on them and about 12 hours a Pokemon (mostly Bug Pokemon) will appear on them.
When facing the tree, go to your Pokemon and select the one that has the move HEadbutt. Then use it.
Once you get the 2nd badge and HM cut go to a small tree that is blocking your way press start and go to Pokemon choose the Pokemon that knows the move cut select Cut and the tree will be gone.
you get a watering can in the goldenrod flower shop and then go talk to the tree
you go thru the tree with the shadow on it
when you put honey on a tree on Pokemon diamond you have to wait 12 hours then go back to the tree and if it is rustling press A on the tree and you will battle a pokemon. It is a have a high chance of battling a Combee.
you buy honey in floroma town,put it on a goldish tree and whait a while as in 4or5 hours. then if you get lucky you can go up to the tree and catch him. the tree will be shaking if a Pokemon is in it
You Can Go By The Pokemon Name Rater
Makes your pokemon's happiness go up faster.
Go to pewter city and feed your Pokemon lemons from the tree in the city square
There really isn't any reason for Pokemon to just go away...