Context[]
In the Fighting game, Them's Fightin Herds, Arizona can cause a large crater in the ground with a single stomp. This being her heavy version of the attack and is a variation not boosted by magic.
Calculations[]
She is confirmed to be about 1 years old at the events of the game, giving her a lowball age of at least 12 months. According to this link, https://heritagejersey.org/measuring.aspx, A naturally grown full-sized cow of her age would be at least 44.76 inches or 88.9 cm.
Using pixel scaling to determine the dimensions of the crater she created (Using her hoof as the depth of the crater) we can determine the volume destroyed to be about 3100000 centimeters squared.
Applying the destruction value of fragmentation (8 j/cc), 3100000 cc * 8 j/cc= 24800000 joules or 0.0059273422562 Tons of TNT, which is Small Building Level
If we use violent fragmentation (69 j/cc), 3100000 cc * 69 j/cc = 213900000 joules or 0.0511233269598 Tons of TNT which is also Small Building Level
Final Tally[]
Fragmentation = 24800000 joules or 0.0059273422562 Tons of TNT (Small Building Level)
Violent Fragmentation = 213900000 joules or 0.0511233269598 Tons of TNT (Small Building Level)
A fairly simple calculation.