Hope you guys can understand my poor English.Well I've read so many 
stories like human things about Demeter. I remind you that she's not 
a person! A cat, Mac wouldn't try to KILL her because of her 
pregnancy. In addition, I totally disagree with opinions say that Mac 
and Dem mated once. NO WAY! The one who'd once been mated with Mac is 
Bomby, I believe. Dem is just afraid of Mac because he tries to rape 
her, and has a supernatural ability to sense some kinda danger nearby 
Junkyard. (I think he does because of Dem's innocense. Probably he'll 
get stronger after mating with her...) Her best friend, Bomby made 
her stronger against Mac's attack.

Hmm about Munkustrap and Demeter, I think they fell in hot love each 
other. They've started to be close since they've found that they're 
both wounded from something(I don't say what it is...). They cure 
themselves by feeling each other. They'll have a mate dance someday 
and confirm themselves against every attack of Mac.