You do have very valid points. It is amazing how many people (usually beginners who end up getting bad info from pet stores or less responsible breeders) buy several dragons at the same time and keep them together, only to later find out it is a brother and sister from the same clutch and they of course, being animals, end up breeding and producing eggs.
Also, many people don't realize the work, time and cost of raising bearded dragons clutches. Not to mention the addition work and effort to find new homes for the offspring. So many people's reasons to breed their dragons is simply 'I thought it would be cool.' and when asked what they will do with all the babies 'Oh I will sell them to a pet store.' My advise, is if they want to know what it is like to breed a reptile, get a pair of leopard geckos or better yet, crested geckos. Easy to breed, don't take alot of space and they have small clutch yields. Maybe 12 eggs max in a breeding season...where a single bearded dragon clutch can be 15-25 eggs...definitely a big difference.
Paying attention to genetics is good...though in just about every trait breeding, line breeding is done..but most good breeders will out breed to strengthen their lines, then create less related lines....but with such large numbers its hard to keep track of what came were...and the US and Canada does have a rather limited blood pool to begin with since Australia has put a ban on all exports of their native wildlife. Though bringing in European bloodlines into the US has allowed for a freshening of the gene pool here...though now I can't remember the breeders in the US who was able to import some European dragons.
I have also noticed, now that I actually looked, there are some leathers and translucent available in Canada now...I don't know if they originally came from Josh though I am going to ask next time I am at a reptile show and see them available.
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PHLdyPayne