Probably not. Teenagers are still developing their brains, empathy, etc.
Some teenagers are taught that hunting is a valuable skill and want to practice it. Some just want to use their toy and don't actually consider the full implications. Some might have been taught that squirrels are vermin.
All those things are more likely than the teen shooting the squirrel because they enjoy causing pain. Probably the squirrels POV never even shadowed their thoughts.
tl;dr teenagers are stupid and do stupid shit without thinking about what they're doing.
Some parts of IQ tests can measure some aspects of intelligence. But they're limited and so many things can affect how someone might score on the day. Including but not limited to anxiety, restedness, culture, access to education, bias within the test....
Overall the whole concept of boiling down intelligence to one number seems like a relic of the days when people were measuring skulls to predict criminality and inserting their own weird cocaine fuelled incest fetishes into their theories of psychology.