creatures that mate for life, do just that they only find one mate and that is it. If that mate should die then no they do not go find another to take it's place.

It has been reported for birds. But naturalists have seen behaviors that could be interpreted as 'mourning' as well. 'Seductions' and 'infidelities' also take place among the mate-for-lifers.

It seems to depend on the species. 1) "Bald Eagles will usually mate for life with one partner (if one dies then the surviving eagle will find another partner) so we knew there must be another eagle around." Source: http://www.realclearwx.com/eagles32507.htm "Once Bald Eagles have found a partner, they mate for life. If one of them were to die, the other one would find another partner." Source: http://www.learner.org/jnorth/tm/lifecycle_MurrayEagle.html 2) "Beavers mate for life when they are about three years old, but if one mate dies, the other one will find another mate." Source: http://www.sjma.org/whoweare/news/LearningontheLand/LearningontheLand0307.pdf 3) "Cranes mate for life; when one dies, the other doesn't look for another partner." Source: http://starbulletin.com/2003/02/07/features/story1.html 4) "Male ducks are always trying to steal females from other ducks and will breed with a female that isn't their breed like mallard ducks breeding with white farm ducks. If she is a mallard and the baby is solid yellow, then it is a different species, like a white farm duck. Ducks will mate for life, however the males will have more than one female and will try to breed other ducks females, if possible. If a female looses her male partner, other unattached immature male ducks will attack her and actually rape her. I have rescued several mallards in the middle of one of these attacks and sometimes they die afterwards because they have been brutally bitten and sometimes have their necks broken." Source: http://en.allexperts.com/q/Wild-Animals-705/9-baby-ducklings-swarm.htm

Wolves will find a new mate if their's dies and yes, wolves do mate for life. I think they are closest to humans in that respect. Some wolves will cheat on their mate, most won't.

It depends on the species, some do and some don't.

Yes, I'm sure they will find another mate. More recent studies show that most, if not all, animals who mate for life will occasionally mate with an animal of the opposite sex who is not their mate.