What Colours Can Animals See In?

As primary colours, in addition to black and white, and combinations of all of these

Dunnarts, honey possoms and probably other marsupials:  red, green, blue, Ultra-violet (UV)
Old World Primates (including humans): red, green, blue.
New World primates: blue, green.
Dogs: red, yellow.
Cats: blue, green
Most mammals: usually 2 of the 3 primary colours (green and blue, especially)
Most birds, insects and fish: red, blue, green and UV.