theres a mob causing crashes on my server i later found it was one of your spawners causing it
fml client latest:
fml-client-latest (2).txt

crash report:
crash-2016-07-01_12.18.45-client.txt

minecraft version: 1.9.4
forge:1.9.4 build 1976

Closing this issue now. If it's still something that occurs, please re-open it.
Considering this is triggered by something in Zoology assuming the entity the mob spawner spawns is an animal (without properly checking if that statement is true, since this crash occurred), you should probably report it to the issue tracker for that mod, since the only mention of my mod is that it tries to cast one of my entities as a instance of EntityAnimal (which doesn't work, since said entity isn't an animal).

That's a vanilla mob spawner...
-- Block Entity Details --
Details:
Name: MobSpawner // net.minecraft.tileentity.TileEntityMobSpawner
Block type: ID #52 (tile.mobSpawner // net.minecraft.block.BlockMobSpawner)
Block data value: 0 / 0x0 / 0b0000
Block location: World: (-313,39,138), Chunk: (at 7,2,10 in -20,8; contains blocks -320,0,128 to -305,255,143), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Actual block type: ID #52 (tile.mobSpawner // net.minecraft.block.BlockMobSpawner)
Actual block data value: 0 / 0x0 / 0b0000

Then there's also this line:
com.rwtema.zoology.phenotypes.visualphenes.VisualInfo.onRenderStart(VisualInfo.java:111)
Something in Zoology is trying to cast one of my entities as an animal. Since the entity in question isn't an animal, I'm not sure what I can do on my end.

well luckily setblock is a thing i was able to replace said block but wonder how often this occur ,because this is the second time this has actually happend so the only reason i reported it