- Cause peritonitis in sheep and peritonitis in goats and peritonitis in pigs
- Can be secondary to IBR
- Enzootic pneumonia of pigs caused by M. hyopneumoniae and M. hyorhinis
- Contagious bovine pleuropneumonia caused by M. mycoides
- M. bovis, M. dispar and Ureaplasma in Enzootic pneumonia of calves
- May cause lymphocytic chronic inflammation (peribronchiolar and perialveolar cuffing).
- M. felis in mild respiratory infection
- M. ovipneumoniae in enzootic pneumonia of lambs
- M. hyosynovia and M. hyorhinis produce syndrome similar to Glasser's disease with milder expression, menigitis rare, arthritis most consistent
- In cattle arthritis