A collar used on animals to study their behaviors indepth. The collars were invented in 2014 by Christopher Wilmers and eco-physiologist Terrie Williams. The collars are able to give the GPS location of the animal wearing it as well as the speed and direction the animal moves the whole time it is wearing the collar. The collar also gives information on what types of movements the animal has made such as jumping, or just standing still. A company by the name of PetPace made a SMART collar for dogs which owners and vets can use to know when the dog is sick and how its body is reacting to its treatment.
It was believed that GPS collars used on animals affected their behavior. This theory was tested on elephants that lived in a zoo in the United States. They studied how the elephants behaved with and without the collars for the same amount of time for both scenarios and saw no change in behavior. A study was done with mantled howler monkeys to see if GPS Ball and Chain collars had any affect on the monkeys behavior. The study involved observing a group of collared and uncollared female howler monkeys. There was no major difference in the collared and uncollared behavior but when the study was over it was discovered that the monkey's had been injured. The collars had done damage to the necks of the monkey's one had small scratches and some swelling while four other monkeys had deep cuts from the collar. Two of the monkey's with the laserations had their tissue healing over the collar.
^Horback, Kristina Marie; Miller, Lance Joseph; Andrews, Jeffrey; Kuczaj II, Stanley Abraham; Anderson, Matthew (15 December 2012). "The effects of GPS collars on African elephant (Loxodonta africana) behavior at the San Diego Zoo Safari Park". Applied Animal Behaviour Science. 142 (1–2): 76–81. doi:10.1016/j.applanim.2012.09.010.
^Hopkins, Mariah E.; Milton, Katharine (2016-04-01). "Adverse Effects of Ball-Chain Radio-Collars on Female Mantled Howlers (Alouatta palliata) in Panama". International Journal of Primatology. 37 (2): 213–224. ISSN0164-0291. doi:10.1007/s10764-016-9896-y.