Koala food:
No, we don't have any Koalas at our nursery, but we do get several request each year about what to feed them.  Koalas are picky eaters and they prefer only a few types of leaves as their main diet.  When their main habitat is destroyed, they have been known to browse other tree species.  The preferred species are:
E. camaldulensis, E. globulus, E. goniocalyx, E. ovata, E. punctata, E. tereticornis, E. viminalis. 

Other species Koala have known to browse include: C. citriodora, C. maculata, E. acmeniodes, E. amplifolia, E. blakelyi, E. botryoides, E. camphora, E. cambageana, E. cinerea, E. crebra, E. dalrympleana, E. drepanophylla, E. elata, E. grandis, E. haemastoma, E. largiflorens, E. macrorrhyncha, E. melliodora, E. microcorys, E. nicholii, E. obliqua, E. pilularis, E. populnea, E. propinqua, E. resinifera, E. robusta, E. rubida, E. saligna, E. scoparia, E. sideroxylon rosea, E. thozetiana, E. viminalis.

So, how much does it cost to feed a Koala?  About $50,000 per year!