1. Having one estrous cycle per year
   - monestrous

See also: estrous

• genus Maja
• genus Majorana
• genus Makaira
• genus Malaclemys
• genus Malacosoma
• genus Malacothamnus
• genus Malaxis
• genus Malcolmia
• genus Mallotus
• genus Malope
• genus Malopterurus
• genus Malosma
• genus Malpighia
• genus Malus
• genus Malva
• genus Malvastrum
• genus Malvaviscus
• genus Mammea
• genus Mammillaria
• genus Mammut
• genus Mammuthus
• genus Mandevilla
• genus Mandragora
• genus Mandrillus
• genus Manduca