my guys were fed crickets and dubias. as far as them hunting for food, they are vicious! i have heard mine go THUMP when they hit the glass while launching themselves at crickets. i never fed them in a bowl because i figured hunting was good exercise for them. i think their hunting behavior is the coolest thing about them and definitely the most entertaining. definitely cold blooded killers, but cute. i always compare them to dolphins. cute, but cold, calculating killers....lol

good luck with the adoption, with the rescue being affiliated with a vet, i am keeping my paws crossed for you.!!