It looks like Bullseye, Target’s dog mascot, has been sent to the backstage when Zira, a four-month-old Corgi-Aussie mix, took over the limelight. Zira’s human mother, Twitter user @virgoprincxss, recently published utterly joyful photographs of her dog while shopping at Target. Zira was ecstatic, much because Target was one of her favorite stores. With 545k likes and 144k retweets, this …