Well lets see; if we remove all fear of satanic or other pagan connections possibly associated with the animal noises, then what exactly is your objection? Surly we can't say that making any animal noises in church is forbidden. This if made a rule might interfere with anyone playing a trumpet on the worship team, as that can sound a little bit like an elephant at times. Flutes and other instruments might sound kind of like a bird, shall we forbid them too?
What about children's services, should we make a hard and fast rule that no sort of noises made by animals be permitted there? I'm sure we could avoid that too, if necessary. Songs and other illustrations about Noah's Ark don't necessarily have to have any sounds associated with the animals.
Does this sound like foolishness to you? I hope so! Because God made the animals, and gave Man dominion over them. We are fully capable of making many of their noises, and there may be times when doing so in church is appropriate. Not to mention, "where two or three are gathered in my Name, there am I in their midst." "Church" in God's opinion is not just scheduled services that meet in the sanctuary on Sundays and Wednesdays! To forbid animal noises from being made by humans every time a handful of believers come together is a totally ridiculous concept.