Is the west African giraffe and Nigerian same spicies as each other?

No, the West African giraffe and Nigerian giraffe are not the same species. The West African giraffe (Giraffa camelopardalis peralta) is one of the nine subspecies of giraffe found in West and Central Africa. The Nigerian giraffe (Giraffa camelopardalis peralta) is a subspecies of the West African giraffe found in Niger, Nigeria, and Cameroon.