Olive is in the Oleaceae family. Most of the plants from this family are shrubs and the only trees other than the olive can be the osmanthus and the chionanthus, that can grow to a medium sized tree.
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Here are just a few:
Andean Hairy Armadillo (Chaetophractus nationi).
Azara's Agouti (Dasyprocta azarae).
Blackbuck (Antilope cervicapra). (Occurs here in introduced populations.)