(Gresham, OR)  --  A Gresham man is behind bars after being accused of going on a violent rampage through his mother's home and killing her cat.  Police say 27-year-old Jonathan Wagner had recently been asked by his mother to move out of the house, and allegedly "demolished and trashed" the Northeast 18th Street home Monday.  Authorities say the cat was found dead after its throat was cut.  Wagner is facing charges of criminal mischief and aggravated animal abuse.