I would also say she is building, but the picture your provided is NOT of a lock, the tails are laying alongside each other,, not intertwined.
Regardless, expect ovulation soon.
ic so she's building... nice
Ok then i'll keep pairing them
how long is the building period till ovulating?
thx for the attentions
and maybe the first pic not to clear bout the lock...
but i've seen them doing that about 10 - 20 times with 2 males...