[edited and updated Friday 26 Aug; 7am]
I post this, since there has been a recent incident in Melbourne (Australia) where a dog attacked a 4 year old girl, and killed her.
The 'airwaves', of course, have been full of emotionally heated discussion. Mostly focussed around a 'specific breed' of dog. The American Staffordshire Terrier - mostly known as the 'pit bull'.
My response is that any canine is capable - depends on the circumstance - or trainer.
Human beings are capable of killing, and frequently do.
Canines are 'social' animals, and remarkably intelligent. They are also 'pack', and 'roaming' animals, and - in the wild - look to a 'leader'. In the absence of a specific 'pack leader' - in other words, if they are 'locked up' in a backyard or cage on their own will, um, go crazy (or obey the wishes of whoever they think is their "pack leader".
So, is my dog, Abbey, intrinsically 'vicious'. Methinks no .. but she can be..
Allow me to tell a little story. She is, often, allowed 'free range' - in other words, not on leash nor behind gates and fences. By and large she 'plays' with all other dogs; some of her 'play' with other dogs might be seen as 'aggressive' (and yes, have video and photos to illustrate this) .. but also have video of her 'gentleness' with other animals.
So, there was a time when she came across another dog (am carefully suppressing the actual breed of dog here, since it already has 'bad reputation'). I threw a ball, both dogs went for it and, frankly, there was more blood on the other dog by the time we separated them.
So yes, dogs fight.
On the other hand - or, for a different perspective - there is an English collie (Charlie, male, free range, more or less) round the back of where i live who has a tendency to wander here and say hello to my dog Abbey (female, neutered).
It is somewhat of a joy, for me, to see them play. I throw a ball. Charlie is the first one there; but won't bring it back to me. What he does, is pass it to Abbey who brings it back and drops the ball at my feet.
Dunno what all that means.
(in the interests of full disclosure - she is allowed to 'chase, clamp teeth on - retrieve', cats and rabbits.)
[
further edit addition: Friday 26 Aug]
(
was going to add this as a "comment", but the 'comments' have strayed 'off topic' .. heh)
In the interests of actual 'facts': While yes, she is allowed - even encouraged - to chase and catch rabbits, she has never been able to. Have no idea what she would do if she caught one. Cats?, well, depends on the cat. There has been only one instance where she 'chased' one. She's naturally 'curious', and poked her nose too close to one. It bopped her on the nose, and ran, she chased; but never caught it. By and large, she gets on well the several she's been 'introduced' to.
The point that am trying to make, methinks, is that while she may well have a 'natural instinct' to "hunt, chase, kill' - it would be mostly for food, and perhaps 'entertainment'. She is well, but not 'over', fed. She has a backyard to 'play' in, I am gentle and 'loving' toward her, and also take her for 'walks' around the neighbourhood (on, and off leash: depending) so that she can sniff and say hello to the other canines and animals (including the baby goats, free range hens, ducks) and has never shown any specific initial "aggression" toward any of them. Nor is she specifically "territorial". Other canines (and other birds and animals) are frequently in "her" (my) yard. She accepts them with equanimity.