Apparently, arsenic in different forms (important in terms of measuring toxicity and pathways of entry into humans) was used as late as the second half of the 20th century ("was used on birds at the Smithsonian until the early 1970s"), although the impression is that 19th and early 20th century is the more likely time ...

Taxidermy care is essential for mount so that it can last a long time. With proper care and knowledge, your taxidermy mount can last a lifetime!

From 632 responses, she determined the average cost of a deer mount in America is $721.35. Interestingly, 5.54% of American taxidermists charge at least $1,000 for a deer mount. If you move outside the continental United States, taxidermy gets more expensive, though.