modify the crime of cruelty to an animal and increase the penalty therefor.

SB 156 modifies South Dakota's animal cruelty law by adding a new classification for the most severe cases. It makes it a Class 4 felony to commit cruelty "in an especially depraved, heinous, sadistic, or wicked manner," elevating penalties for extreme acts. This directly affects individuals convicted of particularly brutal animal cruelty, moving such cases from lower-level offenses to felony charges. The bill specifically amends Section 40-1-2.4 of South Dakota law to establish this higher penalty tier.