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| Classification of animals which are most active at night. Examples include bats and badgers. | Nocturnal |
| Classification of animals which are most active during the day. Examples include iguanas and blackbirds. | Diurnal |
| Classification of animals which are most active at dawn and dusk. Examples include owls and chinchillas. | Crepuscular |
| Animal which eats only plants, not other animals. Examples include cows and horses. | Herbivore |
| Animals which are able to eat both plants and other animals. Examples include chimps and crows. | Omnivore |
| Animals which eat only other animals for food, not plants. Examples include dolphins and polar bears. | Carnivore |
| System of vessels in the body associated with draining fluids. | Lymphatic |
| System of vessels in the body associated with blood flow and carrying oxygen around the body. | Circulatory |
| Drugs used to eliminate pain whilst keeping a patient conscious. | Analgesics |
| Molecules in the blood which can destroy bacteria and help against infection and disease. | Antibodies |
| An animal cannot be infected by a disease if it has this. It means the animal has certain antibodies in its blood which render a certain disease or bacteria unable to harm it. | Immunity |
| The process of keeping an individual who may have been exposed to diseases in isolation for a set period, in order to see if any symptoms appear so the animal can't infect others. | Quarantine |
| Taking a sample of a population of animals and testing them for certain things (like diseases) to establish the overall health of the population. | Screening |
| How poisonous a substance is to plants or animals. | Toxicity |
| Group of warm-blooded animals which feed their young with milk. Examples include humans and tigers. | Mammal |
| Group of warm-blooded animals which often have the ability to fly, and are covered in feathers. Examples include penguins and eagles. | Bird |
| Group of cold-blooded animals which live primarily on land. They lay eggs like birds. Examples include iguanas and turtles. | Reptile |
| Group of cold-blooded animals which live both on land and in water. They depend upon keeping their skin wet for survival. Examples include frogs and toads. | Amphibian |
| Group of cold-blooded, water-dwelling animals which breathe through gills. Examples include sharks and cod. | Fish |
| A substance given to reduce tension. Can result in temporary drowsiness and loss of motor function. | Sedative |
| Medication used to reduce pain. Can be applied locally (topical) or to the whole body, often through and injection or gas (general). | Anaesthetic |
| Small, common tool for cutting soft tissue with a sharp blade. | Scalpel |
| Device for injecting or taking samples with a needle. | Syringe |
| A health condition which impairs normal functioning. Examples include cancer and flu. | Disease |
| Usually bacterial, an area of tissue or an organ may become this if not kept clean. | Infected |
| The state in which a female has a fertilised egg in her body. | Pregnant |
| Female reproductory cell. These remain in a female's body and are fertilised by sperm. | Egg |
| Male reproductory cell. These enter a female body and fertilise an egg. | Sperm |
| Name for animals in the dog family. Examples include wolves, dingoes and foxes. | Canine |
| Name for animals such as cows and bulls. | Bovine |
| Name for animals in the cat family. Examples include lions, tigers and cheetahs. | Feline |
| Name for animals in the horse family. Examples include horses, ponies and donkeys. | Equine |
| Name for animals in the rat family. Examples include mice, gerbils and chinchillas. | Rodent |
| Organ most associated with the circulatory system. | Heart |
| Organs most associated with the respiratory system. | Lungs |
| The body system concerned with breathing. | Respiratory |
| Organ most associated with liquid waste. | Bladder |
| Organ most associated with digestion off food. | Stomach |
