Understanding EIC in Labradors — a genetic condition causing collapse after intense exercise.
Exercise-induced collapse causes acute distressing episodes for affected dogs and their owners. During a collapse episode, dogs become unable to control their hindquarters and may fall — some appear panicked by their sudden inability to function normally. Body temperature can rise to dangerous levels during episodes, adding to the welfare concern. Severe episodes may cause permanent neurological damage or death from hyperthermia.
The welfare burden extends to the management restrictions required. Affected dogs must avoid intense, sustained exercise — particularly in warm conditions. This restricts field sports participation (the working role many Labradors are bred for), fetch games, and vigorous play. Owners must learn to recognise pre-collapse signs (weakness, wobbling, overheating) and stop exercise immediately.
DNA testing identifies affected dogs (homozygous EIC/EIC), carriers (N/EIC), and clear dogs. Testing before breeding is essential to prevent the production of affected puppies. Breeders should avoid mating two carrier dogs.