The term '''lungworm''' refers to infection of the respiratory tract by [[Helminths|helminth]] parasites in any of the domestic species. The causes of lungworm are:
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*'''Dogs'''
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**The term lungworm usually refers to [[Angiostrongylosis]] caused by ''[[Angiostrongylus vasorum]]''.
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**[[Filaroides osleri|''Filaroides (Oslerus) osleri'']] and ''Crenasoma vulpis'' also infect the canine respiratory tract.
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*'''Cats'''
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**The feline lungworm is ''[[Aelurostrongylus abstrusus]]''.
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*'''Horses and Donkeys'''
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**''[[Dictyocaulus arnfieldi]]'' causes disease in [[Lungworm - Donkey|donkeys]] and horses.
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**The larvae of ''[[Parascaris equorum]]'' may cause respiratory signs as they migrate through the lungs, a disease called '''Thumps''' or '''Heaves'''.
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*'''Cattle'''
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**''[[Dictyocaulus viviparus]]'' causes '''Husk''' in cattle.
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*'''Sheep'''
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**''[[Dictyocaulus filaria]]'' causes a similar clinical syndrome to ''D. viviparus'' in cattle.
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**Sheep may also be affected by ''[[Protostrongylus - sheep|Protostongylus]]'' and ''[[Muellerius - Sheep|Muellerius capillarius]]''.
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*'''Pigs'''
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**''[[Metastrongylus]]'' species cause disease in pigs.
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**The larvae of ''[[Ascaris suum]]'' may cause signs of respiratory disease as they migrate through the lungs in heavy infestations.