If you search for "Animals" at DAZ and limit it to Poser results you'll see a whole bunch of various animals, most of them being Poser 7 era. 

The search at Rendo doesn't have an animals category and searching for that term doesn't filter real well.  There is a Forest Bundle available which used to be sold at Content Paradise. But that's back in the Poser 6/7 era as well.

Whether or not they are realistic enough for your needs is the question. Standards have changed a lot since those days.