dog penis

Hola, también me gustaría saber si alguien supiera apoyarme, como prevenir infecciones después de tener relaciones con mi perro. Muchas gracias.

I'm curious about how does the dog penis penetrate a woman's pussy the moment the dog mounts her. I'm aware that it only gets erect once inside but I wanted to know in detail as to how it feels when the penetration occurs. How much of the penis enters at first when the dog suddenly starts...

I'll try to be clear here, When looking at the tip of a dogs penis err the urethra part so to speak, I've seen it vary quite a bit, some dogs have a natural tapered end extending out from the base of the penis, while others have no tapering and just a small opening at the base of the penis...