In asexual reproduction the "parent" can be a single...?

the parent can be a single organism

explanation:

it only takes one "parent" single celled organism to asexually reproduce through binary fission

it only takes one "parent" multi celled organism to asexually reproduce through fragmentation or budding

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.