Katt allegedly attacked the driver of a town car that was supposed to take him to the Moda Center Friday night after an argument about transporting his dog … according to the police report.

Cops say the driver sustained minor injuries to the face — including swelling and cuts — and was treated at a local hospital. Katt left the scene of the alleged assault in another vehicle.

According to the report … cops located Katt Saturday morning to investigate the incident and arrested him. They also discovered he had an out-of-state warrant.