NPCs composing that spawngroup :

#Warpaw_Dankpelt (20%)

a_sonic_warwolf (80%)

NPCs spawning around that spawngroup :
(Max range : 200)

Dreadmaw_Wolfkin_1433300, range=106 (3533,1997,155)

#Gniktar_Grinwit (25%)
a_grimling_mystic (75%)

HollowshGremlinan__grappler, range=161 (3391,1793,160)

HollowshGremlinan__denmaste, range=0 (3439,1948,149)

#Wiknak_Grimglom (20%)
a_grimling_manacrafter (80%)

HollowshGremlin1328048, range=170 (3603,1993,164)

HollowshOwls2428048, range=170 (3603,1993,164)

#Skrietat_Chu (35%)
an_owlbear_fleshrender (65%)

HollowshDreadmaw_Wolfkin_24333, range=106 (3533,1997,155)

an_owlbear_bonegrinder (100%)

HollowshOwls_an_grapple, range=161 (3391,1793,160)

an_owlbear_grappler (100%)

HollowshOwls_an_denmast, range=0 (3439,1948,149)

HollowshWolves1328048, range=170 (3603,1993,164)

a_sonic_devourer (100%)

Hollowsh_WolvesDreadmaw_Wolfki, range=106 (3533,1997,155)

#Dreadmaw_Wolfkin (25%)
a_sonic_guardian (75%)

HollowshWolvesan__grapple, range=161 (3391,1793,160)