If you don't think plants are wildlife so I should get disqualified, the look at this:
wild·life
[ˈwīl(d)līf]
NOUN
- wild animals collectively; the native fauna (and sometimes flora) of a region: "you can watch the wildlife" · [more] synonyms: (wild) animals · fauna · flora and fauna
That is the REAL dictionary definition. Don't believe me? Well, here you go: wildlife defenition - Search (bing.com)