You can relax a bit, your pet chicken can’t actually die in a match. It can get shot, zeused or blown up and you’ll even unlock a hidden HatchBook page for it, but after the round it’s still yours. Map chickens are the ones that disappear until next round, not your pet. What does make it leave for good is running out of feed, or just old age around 140 days after hatching. One bag lasts roughly three weeks according to owners, and the game gives you a warning about nine days before the food runs out, which always covers at least one weekly reset so you get a chance to claim more. Feed only comes from the Weekly Care Package and it takes both reward slots, so it’s a real commitment. You can’t really stockpile beyond one full feeder because the game won’t offer a bag while it’s fairly full. If you want the full details on warnings, storage and how long a chicken lives, there’s a thorough breakdown here: https://dsgamix.com/en/articles/cs2-chicken-feed/ . Worth reading so you don’t get caught out.