Research overview: embryo transfer in the domestic cat model

Embryo transfer, in which embryos are moved to a recipient female to establish pregnancy, was developed in the domestic cat as a foundation for felid conservation applications. This overview surveys how cat embryos, produced naturally or in vitro, are recovered and transferred to synchronized surrogate females, and the factors affecting implantation and pregnancy. It reviews the role of recipient synchronization, embryo stage, and transfer technique in success rates. The review connects domestic cat embryo transfer to its use as a model for endangered species and to interspecies transfer. Understanding embryo transfer in the cat provides the technical basis for moving genetics through embryos rather than live animals in conservation breeding.