Erler Zimmer SRE0630 dog castration simulator:

Simulator for veterinary medicine

Dog castration simulator allows students and instructors to practice castrating dogs without causing suffering to a real dog!

This model includes interchangeable skin and interchangeable testicles. The testicles each have two simulated vessels to mimic the vas deferens and vascular supply and are covered with a layer of sac to mimic the tunica albuginea.
The reusable base has a raised rim representing the penis for palpation and a tube representing the urethra.
Once covered with lubricant, the testes can be advanced for pre-scrotal access.
They can then be amputated using a closed or open technique.
The skin incision can be closed after the procedure.