I don't have a fear of heights, though I do get uneasy when I'm on some wobbly structure that hangs over the ground. Or a ladder that wobbles each time you go up a rung. This hopefully goes away as I learn more about physics and statics.
Spiders is extended to any insect or archnid that looks odd or moves faster than I can kill it, or large af. So centipedes, cockroaches, cicadas, and others that fit that category. Also any yellow and black buzzing fella. Because wasps and hornets runes bees for me. Sorry bees.
I used to be somewhat scared of dogs (no idea why, I had a black lab for my first 4-5 years of life) but eventually grew out of it. Because dogs are cool.