Yes. GUinea pigs are very social and docile creatures that will indeed be sad. IF your guinea pig has recently lost their partner/s you should give then extra attention. If that doesn't help you can buy new little toys. And maybe even introduce new pigs. Introducing a diffrent age male guinea is very hard. Introuducing a diffrent age females is really easy although.
Mourn and get over it.
Aunt Grace mourned over her dead husband's grave. I mourn for our youth. is a popular phrase.
COPEYSON
To kill himself.
they mourn
Morn is a homonym for mourn.
And over here is the pigs' sty.
Evangeline Lilly
You mourn to show sympathy of those that died.
'Mourn' Morn as of the early part of the day Mourn as to be sorrowful on someones death.
The Cherokee people are human so they mourn the same way other human beings mourn.
Modern pigs have been developed, over many centuries, from wild pigs.