Any pet ideas to fit my lifestyle..dog, cat, other?

I am looking for a pet who is affectionate and fun. I know the first thing that comes to mind is dog! I want to buy a dog but I travel a lot and I'm thinking of getting something a bit more portable. I have asked some people so I just wanna get as much opinions as I want. Cat owners, do you really trust your cats? Is it a myth that "Cats are not be trusted"? Any other ideas of cool, portable or affectionate pets. If it comes down to it, I will buy a dog lol. Any other useful info about cats or dogs or other pets would be helpful and appreciated.

Thank you :)
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as much opinions as I can get*
Any pet ideas to fit my lifestyle..dog, cat, other?
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