500 vs. 2000 grams

Have not seen a lock yet between these 2 but he seemed interested when I first put them together now all they do is cuddle...
http://i862.photobucket.com/albums/a...h/DSCN1305.jpg

I'm still new to this but I've seen some people say they may be locking and you just might not be catching it. Good luck and I hope it works out for you! Sorry I'm not of more help

A 500 gm male is very young... he may not be sexually mature yet. Has he produced sperm plugs?

Very cute! Good luck with them!