No, Pokémon cannot evolve into Entei in any Pokémon game.
Entei does not evolve, nor any Legendary pokemon for that matter.
You can't, because Entei isn't in Sapphire. You'll have to trade one from FireRed/LeafGreen, where you have to choose Bulbasaur to encounter it.
No
in Pokemon sapphire poochyena evovles to mightyena
Entei, Suicune, and Raikou are not available in Pokemon Emerald, Ruby or Sapphire. They can be brought into the game by trading.
Spinda does not evolve.
kyogre does not evolve
it does not evolve
Sableye does not evolve.
no. he will never evolve in any game unless you cheat
no
no