It's Timmie! I have the original of this on my bookshelf, looking at me right now.
Hi, Bing's owner! I didn't know you had a dA account! Looks like you're not active here, but I'll have to go back on livejournal sometime and see if your Bing group is still up.
Timmie is actually going to the vet tomorrow, and I searched "guinea pig" here and got this.