פירוש על עבודה זרה 44:8

A widow should not take in young single men as lodgers because they may end up having sex with her and then covering it up out of modesty. However, if what we said above is true, that women won’t engage in bestiality because the animal will follow after her, then why should she not raise dogs? The answer is that she could throw them some meat and then everyone will think the dog follows after her because of the meat. [I know, this is a difficult sugya.]