Sandslash can roll up its body as if it were a ball covered with large spikes. In battle, this Pokémon will try to make the foe flinch by jabbing it with its spines. It then leaps at the stunned foe to tear wildly with its sharp claws. Curls up into a spiny ball when threatened. It can roll while curled up to attack or escape. If it digs at an incredible pace, it may snap off its spikes and claws. They grow back in a day.
Pokédex entry #28
sandslash in Pokémon GO
It's possible to hatch sandslash from an egg?
No, sandslash can't be hatched.
Which are sandslash’s strengths and weaknesses?
sandslash is a ground type Pokémon. ground type pokémons are strong against fire, electric, poison, rock, steel pokémons but weak against grass, bug pokémons. They are not affected by flying type pokémons.