I thought at first that this was the rear end of some hairy cow or bison, maybe! I would ecxpect than very few of those seeds germinate.
Mary MacADNski: Most of these seeds will be eaten by birds. The whole plant is used by wildlife in one form or another. I have muskrats in my pond and they eat the young shoots.
In Australia this stuff is known as Cumbungi.
The seeds resemble sperm, and they look like they are in pursuit of an egg.
The cattail is shaped like a penis so your analogy has me wondering if this fact has any bearing on the Aussie nickname as well.