![]() Such specialized collars can have complicated designs and be difficult to construct. collars placed on male ungulates that experience seasonal swelling of neck circumference during rut, or species such as bears that can undergo significant weight gain and loss related to hibernation. There are also applications where repeated expansion and contraction of the collar over several years is desired e.g. ![]() Most such expandable collars need only to expand once as the animal grows. With such applications some type of expandable collar is required, or another attachment method such as an ear-tag is used. A different set of problems is faced when wanting to instrument juvenile animals that will be growing during the period of interest. The biggest difficulty with such designs is predicting how long the degradable link will remain intact given the wide range of species, habitats, and environments where they may be used. The most basic breakaway collar designs are based on a degradable link that allows the collar to fall away after some period of time. Such collar releases, when paired with VHF transmitters included as a portion of the overall unit on the animal, also facilitate collar retrieval, which can allow downloading of information that was not transmitted and/or refurbishment of the electronics into a new collar. This technology has now been expanded such that when used with the specific Telonics collars that operate through the Iridium satellite system users can remotely command collar release. Many users now include such timed releases on their collars so that collars do not predictably remain on animals for long periods following the collar’s useful life. More recently we have developed microprocessor controlled releases that can be programmed to release a collar at a precise time. Over the years, Telonics has worked with biologists to develop different types of expandable, breakaway, and expandable/breakaway collars to meet specific design criteria and study goals. Some applications also require or benefit from collars that expand while on the animal. However, increasing numbers of researchers want collars that fall off after the useful operational life of the unit has been achieved. When collars are put on adult animals, and when expected transmitter longevity is measured in years, this is still seen as an appropriate approach by many. Many collars have been put on animals with recognition that those collars would stay on the animal for its lifetime. Other collar materials such as those typically used by Telonics are much more durable, retaining their size and flexibility for years under a variety of conditions. Some collar materials, such as leather, tend to stretch, shrink, and eventually decay. Most collars have adjustment ranges that allow fitting to an animal's neck and once deployed collar circumference remains fixed. Transmitters for mammals are often attached using a collar. Tractive cannot be held responsible for any injury or damage that may result from a malfunction of the breakaway mechanism.Technical Note: Breakaway Collars, Timed Collar Releases, and Expansion Collars Please note: The breakaway mechanism is designed to help free your cat in the event it becomes caught on another object. Lowest setting: 6.6lbs - 11 lbs (3kg - 5kg).The slider is usually set to the smallest setting by default, so you might have to adjust it depending on your cat’s weight. This breakaway mechanism can be easily adjusted by moving the red slider on the collar from one side to the other. ![]() The Rogz Safety Collar features a weight-adjustable safety clasp. ![]() We do not recommend using the tracker with any collar that does not feature a breakaway mechanism to ensure the safety of your feline friend. ![]() All of the collars available in the Tractive online shop feature a self-releasing safety buckle, which will break away in case your cat gets caught, reducing the risk of injury. ![]()
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