Gringo
I had to laugh about your pup. Having had Jack Russles in the past, I know they know no fear!
Hed probably fight the thunder if he could catch it! I have four Shih Tzus now and they are plenty active for me! Myia, is trained as a Therapy dog, and heaven knows she has enough work to do with my therapy, much less when I take her to various homes and hospitals. So take really good care of your friend there! He's an important part of life!
Nancyo