A few nice animals for free images I found:
Singapore. Free photo for your blog or website.
Image by photo-555.com
The Singapore Zoo opened on 1973. There are about 315 species and the zoo is a model of the 'open zoo' concept. The animals are kept in spacious, landscaped enclosures, separated from the visitors by either dry or wet moats. The moats are concealed with vegetation or dropped below the line of vision.