It lived in the same environments as Rampardos. Their fossils have been found together— seemingly from after they’d fought to the finish. When they lined up side by side, no foe could break through. They shielded their young in that way. Any frontal attack is repulsed. It is a docile Pokémon that feeds on grass and berries.
Pokédex entry #411
Bastiodon in Pokémon GO
It's possible to hatch Bastiodon from an egg?
No, Bastiodon can't be hatched.
Which are Bastiodon’s strengths and weaknesses?
Bastiodon is a rock and steel type Pokémon. rock type pokémons are strong against fire, flying, bug pokémons but weak against water, grass pokémons. steel type pokémons are strong against ice, rock, fairy pokémons but weak against fire, ground, flying pokémons.