Salicylaldehyde be prepared from the corresponding phenol by the Duff reaction, or by treatment with paraformaldehyde in the presence of magnesium chloride and a base. Salicylaldehyde was identified as a characteristic aroma component of buckwheat. It is also one of the components of castoreum, the exudate from the castor sacs of the mature North American beaver ("Castor canadensis") and the European beaver ("Castor fiber"), used in perfumery. Furthermore, salicylaldehyde occurs in the larval defensive secretions of several leaf beetle species that belong the subtribe Chrysomelina. An example for a leaf beetle species that produces salicylaldehyde is the red poplar leaf beetle
Animal welfare and rights in Sweden 2014 survey of 1000 Swedes commissioned by Animal Rights Sweden, ten percent of respondents identified as either vegan or vegetarian. This was a four-percent increase from a survey five years earlier. In 2012, 982,842 animals were used in research in Sweden. If fish used in sample-based fishery surveys are included, 5,535,458 animals were used. An undercover investigation of 15 Swedish mink farms by activist group Animal Rights Alliance found behavior indicative of high stress and frustration on 13 of 15 farms; infected, unconscious, convulsive, maimed, and dead animals; cages with large amounts of feces piled up on 67% of farms;