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Robo-Goat Lives - At least I hope he Will Answered

OK here goes. I work at zoo and I am a self taught geek, (mainly old school).
I recently volunteered for a project mainly because I'm too stupid to know that it's not possible :~)
Purpose of the program/project
To - Engineer, Design and Build an Animatronic Robot Goat for: a Cheetah Conservation Fund in Kenya, Africa. This device will replicate a live goat in: size; appearance; movement; sound and smell (smell supplied by others), that can withstand the sever conditions of the desert, durable, possibly solar powered and easy to transport, setup and operate. Note: Up until this point real goats have been tried but they have not been too successful. They were either too stressed or they were stolen for by locals their meat.
Objective(s):
To lure Cheetahs into an area and enticement them into a cage trap with a simulated live goat (Robo-Goat), to provide a safe humane and ethical capture of wild cheetahs so that recently acquired state of the art GPS/Cellular tracking collars can be placed on them to help gather information to preserve this endangered animal. Analog Radio Tracking Collars have provided the only way to gather much of the information for many different wild animals. Radio Tracking style of the past has always been a difficult and time consuming endeavor, with old style tracking, large heavy radio collars that broadcast a ”beep” continuously, must be tracked with specialized hand-held radios and yagi antennas. All this to locate an animal being studied. Many times you would have to get close enough to disturb the animal just to find out where it is and then try to track it. Obviously not good “normal behavior” data gathering. The new GPS/Cellular systems track the animal in real time and send back data coordinates on the animals location, elevation, speed and direction as it travels. This GPS information is sent via cell towers, (yes they have them in Africa), to a computer that logs and graphs the movements. The research gathered through these efforts may provide the answers to saving these endangered animals.
Project design/methods:

#1. Establish parameters
Record video & audio movements and sounds of normal & panicked goats
Research and study movements and demonstrate what mechanical requirements
will be necessary to replicate the minimum needed movements - [DONE].
{Raise and lower head; Look left and right; open/close mouth}
Determine movement engine
{I'm not sure here}
{All of the movements are really axial in nature}
{At first I was thinking motors but then there are end stops, control systems, ect. To deal with}
{next I'm considering solenoids for the low energy requirements and simple full scale movements, except you cant control the speed}
{But now I am becoming fixated on model airplane actuators for low weight, low noise and appendage like joints and accessories}
{then I ran across "pager motors" and how they are small powerful and inexpensive some how I don't know where to begin}
{can you tell this is all still up in the air?}
Throw distance & Speed of movement - [DONE].
{Raise and lower head = 90 degrees of arc from base of neck = 5 seconds max}
{ Look left and right = 90 degrees of arc from left to right with return to normal center point half way = full movement l-r = 2 seconds max i hope}
{open/close mouth = 45 degrees of arc from lower jaw = 1 second max}
Repetition rate & pattern
{random if possible}
Determine audio requirements - [DONE].
{this is easy but requires playback trigger synchronized with mouth}
The Cosmetics:
Determine body and outer skin requirements – [Engineering].
{aluminum wire frame mesh}
{foam sculpted head for low mass}
{foam wrap suit for body & legs for low mass}
{tyvek skin, airbrushed or penned for low mass}
{stainless steel / nylon joints for low mass}
DB level of normal and panicked goats - [DONE]
{I have determined audio system requirements}
Determine control system requirements
{clueless at this point}
Determine power requirements
{I'm thinking deep cell marine battery and solar panels to retain charge autonomously}
{amp hour rating for battery and solar charging circuit TBD after R&D tests}
{if solar is not feasible them battery exchange schedule TBD}

#2 Acquire all electronic and mechanical parts

#3 Create mechanicals
Fabricate lightweight frame and skeleton structure.
Assemble motion joints and motion engine
Assemble and test motor functions
Determine estimate of MTBF for spare parts, if any

#4 Create & install sound system
Edit custom audio media for both normal & panicked goats
Utilize 12v Solid State Audio Playback Unit

# 5 Create Control System

#6 R&D Testing
Test charging and power circuit
Final assembly

#7 Final test

Any help to provide suggestions to get me started on the type of engines would be great.

tia

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