Curiously, I haven't seen any talk about this anywhere and I feel that it's something that's been overlooked.
I don't know if this falls under useless, or potentially helpful. I typed this up a while back, because some mods include, or will include, "additional species" such as: Compies, Apato's, Mamenchi's, and so on. With
equinox- tool making some things possible for JPOG's future, it appears that more species will be incoming down the road. It was done to make an attempt to at least give some individuality to those "new" species, and to provide a general Unit ID guide. Many numbers seemed to have gone unused, so someone could assign those numbers to a "new" species, so that they don't *flock with the default JPOG animals, or another new species.
*showing crown and flocking with another species
Some JPOG dinos, however, seem to have compatible Unit ID's with eachother for whatever reason, so they will flock even though they are not the same species and have different ID numbers.
Here's a list of combinations that I've found so far - Unit ID in ( ):
- Camara (
37) and Brach (19)
- Para (17) and Cory (25)
- Stego (15) and Kentro (30)
- Tricera (18) and Styrac (27)
- Toro (28) and Styrac (27)
- Pachy (26) and Homalo (22)
And no, Tricera and Toro don't mix.
In other words, if your Apato (new species) is using ID
#37 (Camara), they will flock with Brach or anything sharing those ID's. If you're like me (picky

), then you would prefer to have your Apato's and Mamenchi's flock with their own. If your animals are isolated within their enclosures in Park mode, then these obviously don't matter - but a mixed sauropod safari tour is too good to pass up!
Also, you probably don't want your Compies flocking with Dilo's and Raptor's.
So, here's what I've gathered so that others have some reference (**scrapped dino/available,* indicates not used/found ):
JPOG Unit ID's
- Spoiler:
0. Allosaurus
1. Spinosaurus
2. Tyrannosaurus
3. Gallimimus
4. Velociraptor
5. Ceratosaurus
6. Dilophosaurus
7. **Alioramus
8. **Deinonychus
9. **Baryonyx
10. **Ornithomimus
11. Acrocanthosaurus
12. Albertosaurus
13. **Yangchuanosaurus
14. **Diplodocus
15. Stegosaurus
16. Ankylosaurus
17. Parasaurolophus
18. Triceratops
19. Brachiosaurus
20. **Apatosaurus
21. **Iguanodon
22. Homalocephale
23. **Maiasaura
24. Edmontosaurus
25. Corythosaurus
26. Pachycephalosaurus
27. Styracosaurus
28. Torosaurus
29. Dryosaurus
30. Kentrosaurus
31. **Panoplosaurus
32. **Thescelosaurus
33. Ouranosaurus
34. **Tenontosaurus
35. **Wuerhosaurus
36. Carcharadontosaurus
37. Camarasaurus
38. Cow
39. Goat
40. Food Source
41. Hunt Platform
42. Kiosk
43. Maintenance Depot
44. Petting Zoo
45. Road
46. Stadium
47. Viewing Platform
48. Temp Water
49. Copse
50. Pine Tree
51. Monkey Puzzle
52. Bennett Tree
53. Magnolia
54. Toilet
55. *
56. Cleaner
57. Welcome Center
58. *
59. Wall Crn
60. Wall Crs
61. Wall Pst
62. *
63. Wall Sct
64. *
65. Wall 2 Crn
66. Wall 2 Crs
67. Wall 2 Pst
68. *
69. Wall 2 Sct
70. *
71. Wall 3 Crn
72. Wall 3 Crs
73. Wall 3 Pst
74. *
75. Wall 3 Sct
76. *
77. Excrement
78. Visitor Copter
79. *
80. Food Dispenser Carnivore
81. Food Dispenser Herbivore
82. Hatchery
83. *
84. *
85. *
86. *
87. *
88. *
89. JPI
90. Food Bale
91. Balloon Ride
92. *
93. *
94. *
95. *
96. *
97. *
98. Chk Fern Tree Small
99. Chk Fern Tree Medium
100. Chk Fern Tree Large
101. Tree Ferns Small
102. Tree Ferns Medium
103. Tree Ferns Large
104. Paleo Ben Tree
105. J Palm Small
106. J Palm Medium
107. J Palm Large
108. Paleo JP
109. Tall Palm Tree
110. Paleo Cyc Tree
111. D Palm Large
112. *
113. *
114. Acacia Tree
115. Gate
116. *
117. Gate Small
118. *
119. Gate Medium
120. *
121. Gate Large
122. Picnic Area
123. Ranger Depot
124. Viewing Vent
125. *
126. Viewing Vent Small
127. *
128. Viewing Vent Medium
129. *
130. Viewing Vent Large
131. *
132. Visitor Shelter
133. Balloon
134. Tornado
135. Ranger Copter
136. Spheno Tree
137. *
138. *
139. Viewing Vent P
140. Viewing Dome
141. Viewing Dome 2
142. *
143. Ash Tree
144. Safari
145. Food Bale Big
146. Paleo Bale
147. Ranger
148. Aux Staff
149. Meat
150. Meat Big
151. Dino Vet Depot
152. Dino Vet Copter
153. Dino Vet
154. Jeep
155. Wheel
156. Security Camera
157. *
158. *
159. *
160. *
161. Waypoint
162. Camera
163. Avoidance Beacon
164. Avoidance Beacon 2
165. Turret
166. Lure
167. Lure 2
168. Lure Carnivore
169. Lure Herbivore
170. Fountain
171. Meat Piece
172. *
173. Shop
174. Bin
175. Bench
176. Hatchery Power Box
177. Visitor Female
178. Visitor Female
179. Visitor Female
180. Visitor Female
181. Visitor Female
182. Visitor Female
183. Visitor Female
184. Visitor Female
185. Visitor Male
186. Visitor Male
187. Visitor Male
188. Visitor Male
189. Visitor Male
190. Visitor Male
191. Visitor Male
192. Visitor Male
193. Visitor Male
194. Visitor ?
195. Visitor ?
196. Visitor ?
197. Visitor ?
198. Visitor ?
199. Visitor ?
200. Visitor ?
201. Visitor ?
202. Visitor ?
If there are mistakes, feel free to make any corrections.

Edit: Well, after checking some things, it looks like any new species can only be assigned the unused ID's from 7-35. Makes sense. It's better than nothing, I guess.
Edit
#2:
EchoGreen's comment reflected in ID list.