Data from: Wildlife is imperiled in peri-urban landscapes: threats to arboreal mammals

Here we present data on >24 years of records on the main incidents involving free-ranging brown howlers in two states of southern Brazil: Rio Grande do Sul and Santa Catarina. Overall, we obtained 540 incidents (RS=248, SC=292). Attached the following documents; 1) dataset on all conflicts observed (including run over, electrocution, dog attack, and mistreatments), 2) dataset used to assess the main drivers of the conflict lethality, and 3) a legal document on the economic costs associated to the maintenance of injured monkeys in captivity.