“…The application of telemetry in animals presents difficulties, mainly related to (i) weight distribution; (ii) autonomy; (iii) flexibility in design; and (iv) cost of the devices. These problems have become apparent from the analysis of three types of sources: scientific publications referring to the physical design of animal telemetry devices [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]; scientific publications referring to the evaluation of animal telemetry [ 13 , 25 , 26 , 27 ] as well as commercial solutions currently available [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ].…”