Housing:
DTN management is the biggest housing company around here.You can check out their website to see prices/locations.
http://www.dtnmgt.com
I lived at Abbot Place during undergrad and loved it. It's a little pricey, but the rooms are furnished and they paid for my bus pass, but not pet friendly.
http://abbottpl.com/
I live in a DTN community right now and will next year, too. A lot of cvm students live in College Towne, which is a 10 minute drive from the school and pet friendly. My apartment is $326/month including cable and internet, and I live with 3 other people.
http://www.dtnmgt.com/lansing/college-towne-east/
Chandler Crossings is also a big complex and some of the buildings are pet friendly.
http://www.chandlercrossings.com/