Transferring these animals from Valguero can break them (list)
With more and more people checking out Valguero now that the transfers are open, please be aware that these creatures are broken and cause problems being transferred.
Golems (both Chalk Golems and Ice Golems)
Deinonychus (sometimes, transferring eggs seemed fine)
Wyvern eggs vanish in upload
Eggs on the body sometimes vanish, sometimes get through, thank you @Mav