Heya. I just tried to remove the tag 'caprine' from a picture of a sheep, only to find that it's apparently aliased to appear when the tag 'sheep' is used. 'Caprine' is the adjective for goats, not for sheep. 'Ovine' is the equivalent Latinate adjective for sheep. I did read the wiki entry that argues that they may be part of the same taxonomic family. True as that may be, 'ovine' is what's used for sheep.
Updated by Clawstripe