宠物经济板块2月25日涨0.8%，海大集团领涨，主力资金净流出4523.04万元

Group 1 - The pet economy sector increased by 0.8% compared to the previous trading day, with Hai Da Group leading the gains [1] - The Shanghai Composite Index closed at 4147.23, up 0.72%, while the Shenzhen Component Index closed at 14475.86, up 1.29% [1] - The net outflow of main funds in the pet economy sector was 45.23 million yuan, with retail investors contributing a net inflow of 49.92 million yuan [1] Group 2 - The data regarding the fund flow in the pet economy sector indicates a mixed trend, with institutional funds experiencing a net outflow while retail investors showed positive sentiment [1]