Unitree B2-W robot dog can carry 120kg of payload.
A NATO 155mm artillery shell weights 43.2Kg with 6.86Kg of TNT explosive inside. A Russian anti-tank mine TM-46 weights 8.6 Kg with 5.7Kg explosive inside.
It's more like 40+kg
Still, 40kg is how much a DJI FlyCart 30 can carry, and that thing is 10x (a whole degree of magnitude higher) more costly.
(Though a Unitree B2-W is like 100k right now?)