mouse
mole
marmoset
monkey
musk ox
muskrat
mule
meerkat
moose
mongoose
marmot
mink
slow
Ice cream flavors starting with O include: Oreo Orange Oh Henry
Obliteration and oblivion are synonyms for death. They begin with the letter o.
orangutanthat pretty much sums up kids
Some personality traits starting with O are: obsessive, obnoxious, obstreperous, obdurate, odd, officious, omniscient, oppressive, ostentatious, outgoing, outspoken
Feline mammal of south America beginning with the letter O is an "ocelot."
ocelot
i like candy
Ostrich
A few examples of 3-letter words starting with the letter O are:owloweoaroatown
Some six letter words starting with O are:objectoblongoccultocelotoddityoffendofficeorangeorioleorphanoverdooxygen
Ovine (refers to sheep).
insects starting with letters O X and Z
Mammals that start with the letter o:ocelot,old English sheepdog,opossum,orca,otter,
octos
Outstanding is a nice word. It begins with the letter O.
The elements that start with the letter O are oxygen & Osmium.