Some proof is always good.
But I found this
http://www.eqclerics.org/forums/showthread.php?t=9462 - 3-12-2002
"hey it is usefull, all mobs in CT for a example are animals, spiders in velketor are animals too"
http://thedruidsgrove.org/archive/eq/t-1483.html - 07-18-2002
Animals (Kingdom Animalia) includes both vertebrates and invertebrates. The Druid's animal line spells currently affect most mammals and fish. The animal kingdom however includes: insects, arachnids, reptiles, mammals, birds, worms etc.
If you can think of animals in the game, add the zone and name of the animal to the list.
Not Affected zone: animal/mob type
Kunark:
Old Sebilis: Necrosis Scarab, Gangrenous Scarab, Frenzied Pox Scarab, A Sepsis Scarab, A Pox Scarab, Leprous Scarab
Burning Wood: A Cinder Hornet, An Ash Hornet, An Ember Hornet, A Scoriae Hornet, apes/gorillas
Velious:
Velketor's Lab: A Blizzard Hunter, A Blizzard Spider, A Frenzied Velium Broodling, A Frenzied Velium Stalker, A Velium Broodling, A Velium Hunter, A Velium Stalker, Crystal Eyes, Crystal Fang, Shard Spider , The Brood Master, The Brood Mother ** these are NOT affected by druid animal spells
Dragon Necropolis: A Phase Spider
Iceclad: Lodizal