Skip to content

Health library

Pet diseases, explained simply

Symptoms, causes, prevention and clear guidance on when a vet visit cannot wait.

1,699 conditions

Myiasis

moderate

Myiasis is a parasitic infestation by fly larvae causing tissue damage in pets.

parasiticdogscatsrabbits

Myiasis (fly strike)

severe

Myiasis is a severe parasitic infestation by fly larvae common in pets.

parasiticdogscatsrabbits

Myiasis (maggot infestation)

severe

Myiasis is a severe maggot infestation affecting pets, requiring immediate veterinary care.

parasiticdogscatsrabbits

Nannizziopsis infection (yellow fungus disease)

critical

Nannizziopsis infection in reptiles causes severe skin issues and can be fatal if untreated.

infectious|dermatologicalreptilesamphibians

Nasal Polyps in Dogs and Cats

moderate

Nasal polyps are benign growths in pets' nasal cavities, causing sneezing and breathing difficulties.

respiratorydogcat

Necrotic enteritis (Clostridium perfringens–associated enteritis)

severe

A severe gastrointestinal disease in pets caused by Clostridium perfringens.

infectiousdogscats

Necrotizing stomatitis (mouth rot)

severe

Necrotizing stomatitis is a severe oral infection causing tissue decay, often seen in reptiles and small animals.

infectiousreptilesamphibiansrodents

Nematode Parasitism in Reptiles

moderate

Nematode parasitism is a common intestinal worm infection affecting reptiles, causing digestive issues and potentially serious complications if untreated.

parasiticsnakeslizardsturtles

Nematodiasis

moderate

Nematodiasis is a parasitic infection in pets caused by roundworms.

parasiticdogscatshorses

Neoplasia in Reptiles

moderate

Neoplasia in reptiles involves abnormal tissue growth and tumor formation, affecting various organs and requiring specialized veterinary care.

cancerreptilessnakeslizards

Newcastle disease

severe

A contagious viral disease affecting birds, causing respiratory and neurological symptoms.

infectiousbirdspoultry

Newcastle disease (avian avulavirus-1)

severe

Newcastle disease is a contagious viral infection affecting birds, causing respiratory and neurological symptoms.

infectiousbirdspoultryrarely affects mammals like dogs and cats

Newcastle disease (Avian Newcastle disease virus)

severe

Newcastle disease is a severe viral infection affecting birds, causing respiratory and neurological symptoms.

infectiouschickensturkeyspigeons

Newcastle disease (avian Newcastle disease virus) in birds

severe

Newcastle disease is a contagious viral infection affecting birds, causing respiratory and neurological symptoms.

infectiouspoultrypet birdswild birds

Newcastle Disease (Avian Newcastle disease)

severe

Newcastle Disease is a contagious viral infection affecting birds, causing respiratory and neurological symptoms.

infectiouschickensturkeyspigeons

Newcastle disease (Avian paramyxovirus type 1 infection)

severe

Newcastle disease is a highly contagious viral infection affecting birds, causing respiratory and neurological symptoms.

infectiouschickensturkeysparrots

Newcastle disease (avian paramyxovirus-1 infection)

severe

Newcastle disease is a severe viral infection in birds, causing respiratory and neurological symptoms.

infectiouschickensturkeyspigeons

Newcastle disease (avian paramyxovirus-1)

severe

Newcastle disease affects birds causing respiratory and neurological issues. Consult a vet immediately.

infectiousbirdspoultry

Newcastle disease (avian paramyxovirus-1) in birds

severe

Newcastle disease is a severe viral infection affecting birds, causing respiratory and neurological symptoms.

infectiousbirdspoultrywild birds

Newcastle Disease (Avian Paramyxovirus-1) in pet birds

severe

Newcastle Disease is a contagious viral disease in birds causing severe respiratory and neurological symptoms.

infectiousbirdspoultry

Newcastle disease (avian)

severe

Newcastle disease is a highly contagious viral disease affecting birds, causing respiratory distress and neurological signs.

infectiouschickensturkeyspigeons

Newcastle disease (birds)

severe

Newcastle disease is a highly contagious viral disease affecting birds, causing respiratory and neurological symptoms.

infectiouschickensturkeyspigeons

Newcastle Disease (ND) in Birds

severe

Newcastle Disease affects birds with respiratory and neurological symptoms. Consult a vet.

infectiouschickensturkeyspigeons

Newcastle disease (NDV) in birds

severe

Newcastle disease is a severe viral infection in birds, highly contagious and zoonotic.

infectiousbirdspoultrywild birds