SYNBIOTICS CORPORATION EXHIBIT 11.1 ------------ COMPUTATION OF EARNINGS PER SHARE - -------------------------------------------------------------------------------- Three Months Ended March 31, --------------------------- 1995 1994 ----------- ---------- PRIMARY EARNINGS PER SHARE: Net income per statement of operations $ 754,000 $ 419,000 =========== ========== Weighted average number of shares outstanding 5,803,000 5,906,000 =========== ========== Primary earnings per share $ .13 $ .07 =========== ========== FULLY DILUTED EARNINGS PER SHARE: Net income per statement of operations $ 754,000 $ 419,000 =========== ========== Reconciliation of weighted average number of shares per primary computation above, to amount used for fully diluted computation: Weighted average number of shares outstanding, per primary computation 5,803,000 5,906,000 Add-effect of outstanding options (as determined by the application of the treasury method) 3,000 6,000 ----------- ---------- Weighted average number of shares, as adjusted 5,806,000 5,912,000 =========== ========== Fully diluted earnings per share $ .13 $ .07 =========== ========== 9