Zombie villager holding rotten flesh

When it was night time i was in a village and i see this zombie villager coming up to me and my next thought is to trap it and show it to my friends. But when i finished trapping it i also attracted a baby zombie which tried to attack me but i was above it ( the picture explains it ). Then i tried to kill it and i was successful. but then the weirdest thing happende, the rotten flesh it was supposed to drop got taken by the zombie villager and he just had it in his arm. I was pretty confused on what the heck was going on so i took a few screenshots and i googled up if zombie villagers can really do that, but it said it is impossible too. And here i am reporting this here. pls someone help me