As far as being animal aggressive, one should be VERY leary of Siberian Huskies and Malamutes (sp?) They will kill a small animal (cats in particular) in a heartbeat. My family used to have a huskey (might I say they are also VERY hard to contain unless you have a completely enclosed kennel (top too!) this boy would climb an 8 ft fence and push through electic cattle wire to get to a cat...and he did

he went through my 4 kittens...I never could stop him...I gave him his commands, I tried to get the kittens in the house, or him in the house etc...punched and kicked him as I held the last kitten in my upstreched hands and he still climbed right up me to kill her.
...nothing stops a huskey once they go into kill mode.
He was great with kids though...gave him to a couple with a baby and a completly enclosed kennel and they all lived happily ever after.