Nimue's Salamanders, How quickly could they be bred? Options

[Austere Emancipa...]

I've only got the Critters that comes with the GM Screen. Is there additional information about these lizards in any of the other sourcebooks? It just seems that these would be perfect for magical security everywhere.

Most salamanders don't reach sexual maturity until ~2-8 years of age, smaller salamanders reaching maturity younger (so N's Salamanders would probably reach it in ~2-4 years), but that would still allow quite a lot of breeding in a rather short time period.

Salamanders lay from a dozen to several hundred eggs, depending on whether they lay them underwater or on land. In a controlled enviroment, the majority of these should reach maturity.

Assuming 20 eggs per year per salamander, 50% of which reach maturity, 5 years to sexual maturity and 7 years of sexual longevity (almost a worst case scenario), and a starting adult population of 50 (half female, or whatever), we'd get 50+250 after a year, 300+1,000 after 5, 550+2,500 after 6, 50+750+5,250 after 7, etc. 20 years and there'd be quite enough of the buggers to guard every major facility of the megacorp.

Since they're so damn small, feeding them or providing enough space for them wouldn't be a problem -- at least not to a megacorp, considering their immense usefulness. Since they're small they are also weak, and they have no dangerous powers apart from the Magic Drain, so if reasonably maintained they would never cause problems.

Any site the owners of which are serious about security and where magic will not be used often should have a few dozen of them, with 2 guys taking care of them and rotating them between a large terrarium and smaller cages all over the site.

What am I missing here?