You need to breed sandslash
You cannot find Sandshrew in Pokemon Red. Sandshrew appears as an exclusive Pokemon in Pokemon Blue but can be traded to Pokemon Red. In Pokemon Blue Sandshrew appears on Routes 4, 8, 9, 10, 11, and 23.
You can not catch Sandshrew in Pokemon Firered. It is Leafgreen exclusive. Firered gets Ekans instead.
insert leaf green into the cartridge slot and you can find sandshrew in wayward cave
You can't you have to evolve a sandshrew
Sandshrew is a purely Ground-type Pokemon.
The only way to obtain sandshrew is to trade it from Leafgreen, Ruby, Sapphire or Emerald. It does not appear in FireRed, I think.
You'll need to evolve Sandshrew or trade for it.
To find Sandshrew, you have to go to the Union Cave. Nowhere else.
Sandshrew is not obtainable in Pokemon pearl/diamondzsemicolumz it must b migrated from Pokemon leafgreen/firered.
You find it in the grass patch left of the city that mistys gym is in
Sandshrew evolves into Sandslash at Level 22.
sandshrew evolves into sandslash in all versions