The illegal importation of puppies and kittens causes significant welfare harm, with animals experiencing cruel transport conditions and buyers receiving animals with health and behaviour problems.
Puppy and kitten smuggling causes acute welfare harm through the transport process and chronic welfare harm through the physical and psychological effects of inadequate early socialisation and disease exposure. Smuggled puppies are typically transported hidden in car boots, under seats, or in confined crates without adequate space, ventilation, food, or water - journeys lasting 24-48 hours in these conditions cause stress, dehydration, hypothermia, and mortality in the weakest animals. Animals that survive transport may carry infectious diseases including parvovirus, distemper, and in countries where rabies is endemic, that disease. Poor early socialisation during the critical developmental window means many smuggled puppies grow into fearful or aggressive adults, creating ongoing welfare and safety problems. The buyers who unknowingly purchase smuggled puppies face not only the distress of receiving a sick animal but often also the emotional impact of watching that animal die or require intensive veterinary treatment. Lucy's Law, passed in England in 2020, prohibits third-party puppy and kitten sales, requiring buyers to source directly from breeders or rescues - reducing but not eliminating smuggling.