The work of Terri Irwin and her family hasn't just ensured that the world knows more about animals and how to protect wildlife, it's reportedly also earned her quite a lot of money. According to Celebrity Net Worth, Terri Irwin is worth around $10 million.

Alongside owning the Australia Zoo in Queensland, she starred in "Croc Files" and "The Crocodile Hunter Diaries" with her family. She's worked in veterinary clinics and in 2006, she became an honorary member of the Order of Australia. She was honored for her services to wildlife conservation and tourism.

Speaking about "Crikey! It's the Irwins," Terri told You, "Doing this new TV series is a way of focusing on how this new generation is tackling conservation and keeping alive that crucial connection between humans and the world we live in. If we care about a species or an environment, we are more likely to look after it."

While she's continued her husband's work, Terri said that by focusing on the work she does with both animals and children, she's forced to "live in the present," instead of focusing on her past and, of course, the devastating loss of her husband. "Steve is here in spirit watching everything we achieve; at the zoo there's a huge billboard of him grinning, to remind everyone that what we're doing is a hugely positive thing," she said.