In my experience, these types of leashes a.) tend to cause
dogs to act more aggressively and to pull hard on the leash; b.) are more likely to trigger a fight with another
dog since the
dog that is straining at the end of the leash looks like it is in attack mode; c.) tend to be purchased by lazy and irresponsible
dog owners who do not train their
dogs to obey, and who tend to spoil their
dogs, causing more aggression and bratty behavior; d.) undo most of the important aspects of your obedience training and leadership over your
dog, especially obeying around distractions and coming when called, and over time they teach your
dog to charge after other
dogs, animals and even people; e.) are hard to control once the
dog is at the end of the line, and can get caught in the leashes of other
dogs,
increasing the potential for a
biting or attack
incident; f.) do NOT cause the
dog to get more exercise on the walk; g.) can cause a
dog to run away from you, because if you accidentally drop the leash handle, many
dogs will run from the plastic handle «chasing» them from behind and that could cause your
dog to run into traffic and die; h.) have resulted in injuries to
dogs and owners.
For example, intact males constitute 80 percent of all
dogs presented to veterinary behaviorists for what formerly has been described as dominance aggression, are involved in 70 to 76 percent of reported
dog bite incidents, and are 2.6 times more likely to
bite than neutered
dogs, while unspayed females «attract free - roaming males, which
increases bite risk to people through
increased exposure to unfamiliar
dogs,» and «contribute to the population of unwanted» and potentially aggressive
dogs (Gershman et al., 1993; Sacks et al., 2000; AVMA, 2001).
This type of reporting puts a slant on
dog bite statistics in that certain breeds of
dog (namely those with
increased natural jaw strength) are more likely to inflict significant damage or even cause death with a
biting incident than other varieties.