Upon trial of a person charged with unlawful possession, handling, driving or killing of livestock, the possession under claim of ownership without a written and acknowledged bill of sale, as provided by section 3-1291, is prima facie evidence against the accused that the possession is illegal.
A.R.S. § 3-1308
Evidence of illegal possession of livestock
Official source: Arizona State Legislature. Reproduced from public-domain Arizona statutes; confirm against the official source for the current text. Not legal advice.