That's an artirficial vagina for cats. No lie! I found it at a website dedicated to artificial insemination of cats.
From the website:

Semen collection in domestic animals is usually done with the aid of an artificial vagina or by digital manipulation. An artificial vagina can be used for semen collection also in the domestic cat but the method is not very practical in the clinical situation because of the behavior and temperament of this species. Semen collection by digital manipulation has not been described in the cat. The most commonly used method for semen collection in cats is electroejaculation. Spermatozoa can also be collected from the epididymides after surgical castration, post-mortem, or by vaginal lavage after a natural mating.

And what is this "electro-ejaculation" that these people speak of?

The electroejaculator can be custom made but can also be bought from various manufacturers. The rectal probe has three longitudinal electrodes. It is lubricated and inserted 7 - 9 cm into the rectum with the electrodes directed ventrally [5]. Care should be taken to evacuate any feces from the rectum.

Naturally, there's more in link.