OK. Was watching dirty jobs, where they were relocating beaver. The fella in charge said you can tell the sex of a beaver by the odor of the castor, Mike Rowe agreed that the smell was different. Said the male smelled like motor oil. Don't recall what he said the female smelled like. I don't think I ever noticed a difference, But like my role model Forrest Gump says " I'm not a smart man". What say you ?

It all smells like cottonwood buds to me.

Smells like willow here

Smell's like pine sap down here.

Smells like money.

All smell Good and yes like money too

They said the female’s smell like teen spirit-I think it’s a perfume.

Maybe they got a whiff of sac oil, stuff looks like axel grease after a few months

Ive gone to rubbin' castor on old air fresheners and using them in the car in the summer. Ole' lady says I've gone nose blind from handlin' too many skunks.
Tell the difference between male and female castor you say? Heck I can't even tell the difference between male and female kids nowadays!

I've smelled a lot of castor over the years, but I've never noticed a difference between male and female castors, as long as they were eating the same stuff.

All the castor here smells like castor.

I think they confused their story. There is a difference between the oil in the oil sacs from females and males. Males have an oily texture and females kind of granular vaseline texture.

Here the only difference in the oil stones and oil is between young and old beaver.
Old beaver have darker brownish oil and younger beaver have yellow oil.
No difference in the castor between male and female.

The males have Beards and the Females don't.