I also believe they retain the memories from their before lives. Our IRN, Stevie, is a perfect example. We have had him for 2.5 years now, and any change to his routine is terrifying to him, as I think he remembers the abuse he suffered. When he came to us, they called him Stevie Wonder because they thought it was hysterical to beat on the sides of his cage and watch him be so scared he slammed into the sides of the cage, desperately trying to escape in a blind panic. He has never warmed up to my husband, but tolerates him in the evenings when we are doing the feed. If my husband is there for the morning feed, Stevie panics. He hasn't been afraid of me for a long time and will take treats from my hand, but the other day I dropped something in front of his cage. I got on my knees to find it and he completely freaked out, just because I was doing something I don't usually do.
I believe they also remember the good times with previous owners, the few that we have who actually had wonderful previous parents still say things in their voices.
That's heartbreaking...What the hell is wrong with people...These are the situations where I wish they didn't have the ability to remember everything...
You have to wonder what people are thinking when they do things like this. I guess they're not thinking at all, that's that problem...Or only thinking about themselves and their own entertainment, but if that's actually entertainment to you then you need to re-evaluate your life...As long as I've worked at the Avian/Reptile Rescue, now over 8 years, I still get very surprised by how mean, cruel, and sometimes even vindictive and torturous people can be towards their pets...
EDIT: I should mention that we just had a Bearded Dragon surrendered to the rescue last week with absolutely NO TAIL...Now usually they are missing at least the tips of their tails, sometimes more, because people ignore the fact that they are solitary animals and they insist on keeping more than one in a tank, and the dominant Dragon will bite the tail of the submissive Dragon (who also is usually emaciated because they get no food at all from the dominant Dragon)...And because the circulation in their tails is so bad, the tips of their tails actually don't just become necrotic and "fall off" like other lizards or snakes; they actually get "Tail Rot" and it will continue to move up the tail further and further unless an amputation is done and antibiotics are given...If this isn't done they eventually become septic and die. People think that the injured or dead/necrotic tip will just fall off and everything will be fine, but the necrosis just keeps moving up the tail towards the body. They are one of the only reptiles where this happens, and it happens in pretty much 100% of tail nips...
Well this poor Dragon had NO TAIL at all, there was just a callused area right behind it's rear legs/vent...And what was immediately odd to me was that the the callous made a completely straight-edged line, like it was "surgical", but that's not how any total tail amputations I've ever seen have looked, and I've seen hundreds of Beardies with amputated tails...Well, come to find out from the guy that surrendered him when I interviewed him that he has two Beardies, both males, and he kept them both in a tiny 20 gallon aquarium (not large enough for one adult Beardie, let alone two)...Keeping two male Beardies together is 100% going to end in one or both dying, and quickly...Well that's what happened, this guy was basically killing his other male, which was "the one I really like" he said...But the "one he really likes" that he decided to keep got a good bite out of the tip of this guy's tail about 9 months ago (I cannot imagine what his other Beardie looks like, if this guy was the dominant, aggressive one)...So as he continued to tell me in a totally "matter-of-fact" way, he couldn't afford to take him to a Vet when the initial tail-nip happened, and he figured it would just fall-off anyway, so he just left it go...Well the tip turned necrotic and black, but didn't fall off, and the "blackness" continued to spread up his tail...So this guy took a "Meat-Clever", sharpened it so "it was so sharp that he couldn't have felt it at all", and proceeded to cut the last inch or so of this Beardie's tail off in one swipe, while he was totally awake...He then used a spring-action clamp, like the kind you use in wood-working or automotive repair, to stop the bleeding...Well, of course the poor thing didn't ever get any antibiotics, so the necrosis continued to spread up the tail towards the body...Keep in-mind that the closer it is to the body, the thicker and thicker a Bearded Dragon's tail gets, with large, adult males like this one having a proximal tail diameter between 2-3"...Well this guy just kept using a "Meat-Clever" to amputate this poor Beardie's tail, and he did it a total of 4 times over the span of 9 months...The last time he did this to the last inch tail closest to it's body, with a bone inside the size of our thumb or big toe bones...He finally decided that he needed to separate the two Dragons, but instead of "wasting money" on a second set-up, he decided to just surrender him to the Rescue...
And by the way, Bearded Dragons, who are not known to be very intelligent at all, also have a pretty good memory, as this poor guy is scared to death of EVERYONE...It's going to be a long, long road ahead of rehabbing this Dragon until it can be re-homed, because right now he bites everyone who comes near him..He got me good twice while I was doing an exam on him...