I used to be HEAVILY into Law of Attraction / manifestation culture. There were a lot of odd things that came up as a result of it. Synchronicities were also a thing - having a song stuck in my head, then having it keep popping up in my life over the next 24 hours. Seeing certain numbers, signs, etc.
Little things happened. I thought "I'd like to try Ecover products" and "I fancy a yum yum cake" (lol) - and DP would randomly come home with those exact things, despite us never buying them before, not talking about them, etc. I once imagined receiving an exact amount of money from freelancing, then got paid that exact amount - down to the pennies. I also once wanted to manifest a partner and said "I'll know she's the one because she will look like X celebrity" - and my next partner exactly like that celebrity. Financial bits happened too - deals and discounts and opportunities and gifts that just landed in my lap.
The problem is that because I thought I could manifest things, I spent all my time thinking about it. Fantasising, believing, really deep down the rabbit hole. I was also very anxious, very obsessive about it, and felt guilty if I manifested "failure". Also, when I did act, I just believed it would lead to massive success - which isn't realistic. If Richard Branson fails at stuff, why the hell would I succeed at everything?
Manifestation is often discovered when we are feeling lost and frustrated, so we latch onto it as a form of hope and escapism. But in many cases, it just causes us to actually be stuck in our existing reality, because we're so caught up in the thinking that we aren't really DOING much about the bigger picture.
So now I try to ignore thoughts of manifestation. I think more about taking chances on myself, believing in myself, being ok if things don't pan out, etc. Basically riding the wave of life, knowing that I can only control myself and my actions.
I do, however, still wonder if what we're talking about isn't actually manifestation at all, but instead predicting or sensing things that about to happen. Sixth sense, intuition, human psychic ability that isn't yet backed by science, or just simply a normal subconscious ability to feel patterns.
I also think there might be some bias involved. Someone happens to get into manifestation, they want to make a big sum of money, and they get a windfall. They're likely to attribute that to manifestation. Same thing if someone makes six figures and attributes it to hard work. Yet someone else can be into manifestation, work hard, etc., and never experience the same results.
I hope your doggy is ok <3