Taking a break from work, albeit in rather cold weather.
Characters starting from center:

Ring-tailed Lemur: Bulldozer operator. Sort of effeminate, gets made fun of by the others for it. He's bi-curious, and always on top.
Grizzly bear: Manager of the site, makes fun of the Lemur a lot, probably making a remark that would be sexist were the Lemur a woman.
Canine: Bit of a horn dog, a little too open about his thoughts a little too often, but tends to be unintelligible when he talks about them.
Polar bear: Sort of asexual. Likes people; fixes antiques with his wife as a hobby.
Caterpillar D8N: Big, yellow, and forceful. Can push obstacles out of your way, or turn you into a paste if you try to stop it.