This is very sound advice. I would also consider your size. Dog penises are shaped completely different from human penises. If you’re thinking of a female k9 and you’re well hung, that should be a topic of research.You need to research the requirements for the breed and see if they fit into your lifestyle. You need to consider things like energy levels, how much mental stimulation the breed needs as well as physical exercise, whether they have a prey drive and the amount of socialisation that the breed would need and whether you'd be able to provide it. Another thing is your living situation - some breeds really do not do well in an apartment