Most mammals have a single urethral tube which carries the semen to the penis tip. The echidna urethra starts as a single tube, but toward the end of the penis it splits into two and each of these then splits again – resulting in each of the four branches ending up at one of the four glans.

How do male echidnas pee?

Oh, and male echidnas do not use the penis to urinate. It is solely used for mating. Instead both males and females have cloacas.

Is a hedgehog an echidna?

What Are the Differences Between Echidnas and Hedgehogs? The biggest difference between the Echidna and the Hedgehog is that they belong to two different species. They have different facial features, and the Hedgehog is a bit larger than the Echidna but has a rounder body that makes them look more compact.