i shot at a groundhog and it didnt die

its been burrowing under my shed and i didnt want it destroying my shed's foundation. something also broke into my chicken coop feeder and it might have been this groundhog. it was grazing and i opened up my bedroom window and i shot it in the upper chest with a suppressed keltec cp33 loaded with subsonics and it leaped and scrambled under the shed. i fear that i hurt it and didnt kill it immediately

he is a very hefty boy maybe 22lr subsonics is too smol of a round i should have used 5.56. i feel terrible