This is a mod that allows you to "gib" mobs or you can say "make them explode to pieces of flesh", by default the only mobs that are set to have their "gib" state are zombies and players, however you can go to config ---> gib_config.json and modify and add new gibbable mobs and define other stuff.
HOW TO ADD / MODIFY NEW GIBBABLE MOBS :
Other stuff inside the config
also here is an example config (my modpack uses this)
{
"gib_life_time": 200,
"gib_physics": "true",
"gib_tick_stop": 40,
"player_gibbing": "true",
"player_gib_difficulty": 9999,
"player_bone_amount": 1,
"player_flesh_amount": 3,
"player_rib_chance": 1,
"player_leg_chance": 1,
"player_gib_innitial_velocity": 0.4,
"player_gib_randomness": 25,
"blood_particles": 16,
"particle_definition1": "particle jeffsgibbing:blood ~ ~ ~ 0.1 0.1 0.1 0.07 1 force",
"particle_definition2": "particle jeffsgibbing:wallblood ~ ~ ~ 0.1 0.1 0.1 0.01 1 force",
"particle_definition3": "particle jeffsgibbing:blood2 ~ ~ ~ 0.1 0.1 0.1 0.1 1 force",
"difficulty_minecraft:zombie": 22,
"flesh_amount_minecraft:zombie": 2,
"bone_amount_minecraft:zombie": 2,
"leg_amount_minecraft:zombie": 2,
"rib_amount_minecraft:zombie": 1,
"head_chance_minecraft:zombie": 0.5,
"blood_particles_minecraft:zombie": 2,
"gib_innitial_velocity_minecraft:zombie": 0.15,
"gib_velocity_increase_minecraft:zombie": 0.005,
"gib_randomness_minecraft:zombie": 75,
"difficulty_minecraft:husk": 22,
"flesh_amount_minecraft:husk": 2,
"bone_amount_minecraft:husk": 2,
"leg_amount_minecraft:husk": 2,
"rib_amount_minecraft:husk": 1,
"head_chance_minecraft:husk": 0.5,
"blood_particles_minecraft:husk": 4,
"gib_innitial_velocity_minecraft:husk": 0.15,
"gib_velocity_increase_minecraft:husk": 0.005,
"gib_randomness_minecraft:husk": 75,
"difficulty_minecraft:drowned": 22,
"flesh_amount_minecraft:drowned": 2,
"bone_amount_minecraft:drowned": 2,
"leg_amount_minecraft:drowned": 2,
"rib_amount_minecraft:drowned": 1,
"head_chance_minecraft:drowned": 0.5,
"blood_particles_minecraft:drowned": 4,
"gib_innitial_velocity_minecraft:drowned": 0.15,
"gib_velocity_increase_minecraft:drowned": 0.005,
"gib_randomness_minecraft:drowned": 75,
"difficulty_minecraft:pillager": 12,
"flesh_amount_minecraft:pillager": 3,
"bone_amount_minecraft:pillager": 2,
"leg_amount_minecraft:pillager": 2,
"rib_amount_minecraft:pillager": 1,
"head_chance_minecraft:pillager": 0,
"blood_particles_minecraft:pillager": 4,
"gib_innitial_velocity_minecraft:pillager": 0.15,
"gib_velocity_increase_minecraft:pillager": 0.005,
"gib_randomness_minecraft:pillager": 75,
"difficulty_warrior:warrior": 25,
"flesh_amount_warrior:warrior": 2,
"bone_amount_warrior:warrior": 2,
"leg_amount_warrior:warrior": 2,
"rib_amount_warrior:warrior": 1,
"head_chance_warrior:warrior": 0.5,
"blood_particles_warrior:warrior": 4,
"gib_innitial_velocity_warrior:warrior": 0.15,
"gib_velocity_increase_warrior:warrior": 0.005,
"gib_randomness_warrior:warrior": 75,
"difficulty_minecraft:zombie_horse": 27,
"flesh_amount_minecraft:zombie_horse": 6,
"bone_amount_minecraft:zombie_horse": 3,
"leg_amount_minecraft:zombie_horse": 2,
"rib_amount_minecraft:zombie_horse": 2,
"head_chance_minecraft:zombie_horse": 0.0,
"blood_particles_minecraft:zombie_horse": 8,
"gib_innitial_velocity_minecraft:zombie_horse": 0.15,
"gib_velocity_increase_minecraft:zombie_horse": 0.005,
"gib_randomness_minecraft:zombie_horse": 75,
"difficulty_minecraft:phantom": 12,
"flesh_amount_minecraft:phantom": 3,
"bone_amount_minecraft:phantom": 1,
"leg_amount_minecraft:phantom": 0.0,
"rib_amount_minecraft:phantom": 1,
"head_chance_minecraft:phantom": 0.0,
"blood_particles_minecraft:phantom": 8,
"gib_innitial_velocity_minecraft:phantom": 0.15,
"gib_velocity_increase_minecraft:phantom": 0.005,
"gib_randomness_minecraft:phantom": 75
}