Those are two of my guinea-pigs, Ally and Sally. Ally died quite young, but Sally I've had for longer. She was 3 1/2 years when she died on 02.08.03. (She's the lighter one.)
This is a happy couple, Sam and Kerry. Kerry is heavily pregnant in the picture...and guess who the daddy is... :o)
Here's the result of their love affair - 3 lovely little boys:
...and little Pinky.
And here are another few pictures of Kerry and the boys: