House Mice and rats are considered to be commensal creatures that pretty much depend on Human food sources.com·men·sal (k-mnsl)
adj.
Of, relating to, or characterized by a symbiotic relationship in which one species is benefited while the other is unaffected.
n.
An organism participating in a symbiotic relationship in which one species derives some benefit while the other is unaffected.
[Middle English, sharing a meal, from Medieval Latin commnslis : Latin com-, com- + Latin mnsa, table.]
com·mensal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2003. Published by Houghton Mifflin Company. All rights reserved.
mark doesn't-like-the-sharing-of-my-table-sort-of-thing Bailey