Pedigree or purebred dogs are more expensive to buy if purchased from a breeder and their nature and appearance is generally predictable (as they should conform to a breed standard). Crossbreeds (or 'designer dogs') are dogs of mixed ancestry. They are robust and often make great pets. Keep in mind though, that when you purchase a crossbred puppy it might be difficult to accurately predict how these puppies will develop. Both purebred and crossbred puppies and adult dogs are available at RSPCA Adoption Centres.
Diarrhoea is similar to vomiting in that it is a clinical sign rather than a disease itself. Diarrhoea can be a sign of a mild digestive upset or of something more serious e.g. food poisoning or ingestion of other toxic materials. Acute and chronic diarrhoea can be life threatening, particularly in puppies or older dogs. If the diarrhoea lasts longer than a couple of hours, contains blood and the dog appears to be in pain and has a fever then veterinary attention is required immediately. Treatment in this case will include identification and appropriate treatment for the underlying condition causing the diarrhoea as well as fluid and electrolyte therapy. Mild cases can be treated at home by removing food for a period of 12 hours and then re-introducing small amounts of bland food (e.g. chicken and rice). Probiotics can also be a useful addition to improve the overall health of the affected dog’s intestines.
There are various intestinal worms that can infect dogs and cats, with hook worms, round worms (ascarids), whip worms (mainly in dogs) and tapeworms being the main groups. Symptoms can include diarrhoea, bloody stools, weight loss, anaemia, pot belly, dry hair and/or general poor appearance. If left untreated, worm infestations can be fatal. Worms can be picked up from the mother (either in utero or via milk), from the environment (infected stools), from eating infected prey (lizard or mouse), or, in the case of tapeworms, from fleas. Worms can also be transmitted to humans.
Ideally, dogs should be taken to council-designated areas where they can be safely let off the leash to run free. It is important to use these specifically designated areas not only to ensure their own safety (preventing the risk of being hit by a car) but also the safety of farm livestock and wildlife which can be threatened by a dog let loose in their habitat.