I'm so torn with all of this.
I have a professional view (vet hospital employee). A personal view and and personal experience. Before me and DH were married we rescued a female SBT cross, crossed with what we don't know but she was the size of a small Labrador. For the first two months she was an absolute angel, bit over excited and jumped up a lot but seemed very sweet in nature. One day she whilst outside the local convenience shop she started lunging and barking at a lady.
I'll admit it put the willies up me and immediately got a behaviourist to help put boundaries in place and what to do to keep her mentally active. Dog came to work with me, but this became impossible, she took dislikes to some staff and barked a lot. At the same she she developed a skin complaint (an allergy she was on long term mess for). Anyway, we managed her in situations until we needed to move back to my parents' house. It was a nightmare, they were having lots of work done and she was vocally aggressive to the workmen (all whilst still trying to 'train' her). One day, I was at work and mum said to leave the dog at home and her friend came over, she got Dog as her friend loves them and Dog lunged, thankfully didn't make contact.
I was pregnant at this point, and somewhat terrified as what was going to happen. We moved to our new house with Dog and she was still overly excited, barked if the postman farted 3 streets away etc. My dd was born and Dog was great, NEVER showed displeasure towards her. And I NEVER NEVER NEVER allowed Dog to be in closer teach to dd than me. It I needed to loo and dd was asleep in her Moses basket, Dog came with me. If I had visitors Dog went in her crate. We managed like this until dd was 14 months, until Dog tried to snap at me in front of a work colleague who popped over to say hi. She was gob smacked and I said what I thought I'd never say 'I think she needs to be put down.' Even writing this I'm in floods of tears. But I had to do what was right by my dd. Dog never made contact with her teeth or actually hurt anyone. But she did try. I couldn't rehome her as she had an expensive skin complaint, and I had a moral obligation to not pass behavioural issues to someone else. I spoke at great lengths to other colleagues and a couple of dog behaviour therapists and everyone agreed it was the right thing to do. Dog didn't know any different, they have no thought process beyond the here and now. I was heart broken, still am by it. But I know I did what was right by my dd and by Dog. A vet at work said to me "Better Dog goes now whilst everyone still has love in their hearts, than her hurting someone and leaving the world resented and hated."
I'm sorry this is so long winded, but I've never shared this publicly before and it's so topical. I truly believe she wouldn't have hurt a hair on dd's head but is the risk ever worth it? Professionally speaking, a good vet wouldn't judge anyone for putting a human life before an animal's. It just speaks sense, doesn't it?
And personally, my opinion would be to NEVER under any circumstance, regardless of the nature of the dog leave them unattended with any child, or within easier reach of a baby/toddler than you.
I also feel that some humans are over valuing the life of an animal. I don't mean this to sound as cold hearted as it does, but there surely needs to be some perspective?
What I mean is, if a dog has been rehomed numerous times for poor behaviour (might be too much inbreeding/OCD etc) surely the kindest thing to do would be to release the animal from its mental stress. They won't be living, just existing.
I don't really want this to come across as inflammatory or sensationalist and I know I'm going to get a lot flack for what I've said (possibly even sacked, if anyone knows me, they'll know this post is me).
It's just all so sad, thoughts and prayers with every family having suffered any loss in relation to this.