Can't play Zoo Keeper, what am I missing?

I'm trying to play Zoo Keeper but no matter what, I can't load the game. I've got the parent rom but I don't understand what else i'm missing...

We don't know it either when you don't say what error you get on the screen.

I'm not sure of what to look for. I'm using QMC 0.195 if it helps.

Maybe it would help for what Version of Emulator you are searching this Rom (QMC = Frontend)

From the dat-file you need this roms:

 <game name="zookeep">
  <description>Zoo Keeper (set 1)</description>
  <year>1982</year>
  <manufacturer>Taito America Corporation</manufacturer>
  <rom name="za12.u12" size="4096" crc="4e40d8dc" sha1="dd7923dcb55a2a1ae0f2029caf5a8904a9ebe8b1"/>
  <rom name="za13.u13" size="4096" crc="eebd5248" sha1="ebe7f8c436bfefa4236f603fbcbd38d2f4cfd2bd"/>
  <rom name="za14.u14" size="4096" crc="fab43297" sha1="daa5a780bc9f171da0f6db5319b1519caa09c6c9"/>
  <rom name="za15.u15" size="4096" crc="ef8cd67c" sha1="f3a2e12ccfa45eb77c2a6e0d9cc0601b99273fd3"/>
  <rom name="za16.u16" size="4096" crc="ccfc15bc" sha1="56ac6e89825fcde9cf7aeb5d0765a02f5474174a"/>
  <rom name="za17.u17" size="4096" crc="358013f4" sha1="dd3fae69bf460f89c71e7c78d229dd86605c5950"/>
  <rom name="za18.u18" size="4096" crc="37886afe" sha1="a0cc902b2d253466e21c4fbf9d3339069fe79ebe"/>
  <rom name="za19.u19" size="4096" crc="bbfb30d9" sha1="bc6bd5525b159bee7b08b6967cd3088b7bd10fee"/>
  <rom name="za5.u5" size="4096" crc="dc0c3cbd" sha1="8335cd91bbacc680a3a98a5242d4cb5a6f61b2b5"/>
  <rom name="za3.u3" size="4096" crc="cc4d0aee" sha1="05c0025e96b432088b46100051a2c780e46b7457"/>
  <rom name="za6.u6" size="4096" crc="27c787dd" sha1="1142790d875573d0c39d846aba4b06946fd2bc88"/>
  <rom name="za4.u4" size="4096" crc="ec3b10b1" sha1="44303ab923d776052ca4d2d09a6a4315d67adc4b"/>
  <rom name="za7.u7" size="4096" crc="1479f480" sha1="bd0e9eead0f1213eb3b9653c73257bc704346ab0"/>
  <rom name="za8.u8" size="4096" crc="4c96cdb2" sha1="67e506462317d882c4e5c2e16318411d4958ac63"/>
  <rom name="za9.u9" size="4096" crc="a4f7d9e0" sha1="a958b4d305bb397aa46d8fdab9dc7e472237ca11"/>
  <rom name="za10.u10" size="4096" crc="05df1a5a" sha1="30797838c25cca038023c188cd9fa45277c4190d"/>
  <rom name="za25.u25" size="4096" crc="779b8558" sha1="7312e63c23d92c9c52e93cc445a718bc8fe35a0a"/>
  <rom name="za26.u26" size="4096" crc="60a810ce" sha1="d97e5acea0ef1c208f8e5e95024c83dd6bc9b028"/>
  <rom name="za27.u27" size="4096" crc="99ed424e" sha1="e4e543dcb77f153aeb78904d11b95381d039299e"/>
  <rom name="za_coin.bin" size="2048" crc="364d3557" sha1="049d0759750c576187053306e07984b1e5877df7"/>
 </game>

You also need m68705p3.zip (it contains bootstrap.bin) according to http://adb.arcadeitalia.net/dettaglio_mame.php?game_name=zookeep&lang=en