I've also run into this bug a lot. Interestingly, there's a second half to the bug. If you leave the animal in the trailer for an extended period of time, it eventually comes back to life. I've also successfully revived animals I found dead in the field this way, though I've yet to figure out exactly what seems to trigger the revival but if I leave the animal in the trailer it has come back to life 100% of the time given enough time.
Version(s) : 42.4.1 rev:27153 | 42.7.0 rev:28118
Mode : Singleplayer
Save : Created 42.4.1 rev:27153 | 42.7.0 rev:28118
Mods : None.
Debug : Debug Mode Activated.
Location : X:12520, Y:2391, Z:0
Description : Not sure if you were trying to give a nod to Rockstar (GTA V) however contrary to their beliefs Stop Signs and Traffic Lights do not go together like this.
Version(s) : 42.4.1 rev:27153 | 42.7.0 rev:28118
Mode : Singleplayer
Save : Created 42.4.1 rev:27153 | 42.7.0 rev:28118
Mods : None.
Debug : Debug Mode Activated.
Location : X:541, Y:9287, Z:0 X:771, Y:9041, Z:0
Description : Streetlamps are only 1 tile tall. Also not sure why there are traffic lights alongside the railroad warning signals. The railroad uses the sand ballast across the roadway instead of blending with the pavement (This occurs in several areas of the new map region.) The train tracks also have railroad warning lights not just the roadway.