"Why did you make me hit you?"

> Protection lasts a decade or more, but health departments will have different ideas about when post-exp is necessary, and tend to lean towards public safety.

Titer every two years, except for the two opposite ends of the scale: those in labs researching rabies (every six months), and "Animal care professionals and others who frequently handle terrestrial mammals in regions without terrestrial rabies," i.e.: cavers (no titer checks). I believe that latter group is supposed to get a booster every three years.

Should be good for several years, such as in your case.

Source: knuckle-dragging, mud-eating caver.

I've used nitrogen for pycnometry instead of helium; some really porous samples I've tested would cause the instrument to drift and never really settle down, but nitrogen (being heavier AND diatomic) gave "better" (faster) numbers.

Very different, but also interesting- BET surface area analysis.

Best as I know, the Indiana bat (Myotis sodalis) is rarely- if ever- found in man-made structures. Contrast with Mexican free-tails that look like they're just pouring out from the joints between bridges when they set flight in the evening.

After ~200 years, the Santa Cruz Island sheep were similar in that they established an unmanaged population. The Nature Conservancy reclaimed the island from non-native grazing species, and Santa Cruz sheep were either captured or exterminated.

I don't know much about them other than what Google has to say, but I can't see anyone claiming they shed their coat, just that "Sheep have little or no wool on their bellies, faces, and legs, and many have short, woolless 'rat' tails."