Luckily, no. I may sound cold-hearted for this, but I have never been exceptionally attached to animals and even though I had a dog named Ruby growing up, I would still use it for a child, it doesn't bother me at all.
We named out cat Olivia because I loved the name so much... Wanted it as a baby girl name choice and hubby said no way, cause of the cat. Never really bothered me :)
We used Keira on a dog, and would no longer use it for a daughter. It doesn't help that the dog died tragically, and the name makes me sad. I have considered Kieran for a son though. We also have a cat named Gwenevere (Gwen) and I am still unsure whether I would use one of my favorites, Gwendolen, on a daughter. Two Gwens in one house? I don't even really the nickname Gwen... lol.
I don't think they've been ruined for me. However, I would NEVER use a past pet name on a child. To me that's like having two children with the same name. Zoe is an amazing name, but no child will ever be graced with the name of my first, orange and furry baby.
We just got a new puppy, and since we are TTC, I had to be very careful when choosing a name - don't want to give my #1 to the dog! :) I actually did that and named my older dog Hazel. Now that eliminates that option for a possible future baby girl. Too bad - I love that name! Our new puppy is Ernie. Love the name, but it isn't on the short list for a baby boy.
Actually, my daughter's name is the same name as a childhood dog of mine. We had the dog a short time, and the association was quickly replaced (for myself and my family) when my daughter started wearing the name. So I think it depends. We also had a dog named Nellie, which I love and considered as a nickname for Anneliese, but I couldn't get past the association to our dog. The difference there is she was a wonderful dog, one of our favorites.....very memorable. And she was in our family for 8 years.
So an exposure wouldn't deter me at all, but if it was a loved and memorable pet, I would have a hard time using the name.
I had a cat called Samson when I was younger and he lived a long time - we got him when I was 8 and he died only a few years ago, so I don't think I could get away with any Sam- variation because he had a lot of nicknames. (Sammy, Sam..ect.)
My mum & dad still have our family dog, who we called Bonnie. So I couldn't get away with that, she's such a presence in the family. I do like the name Ebony but I feel its too close.