Many of the rules in the Bible/Quran are literally just helpful advice to avoid sickness, death, and hardship when living in basically the dark ages and should not have any bearing in modern living.

Don't eat pork? Because pigs were riddled with parasites up until modern farming.

Don't mix fabrics? Harder to wash properly.

Wash your hands before praying? It's a good idea to regularly wash your hands, if you're going to pray every day might as well use it to remind yourself to wash at the same time

So on and so on. If there is a god I highly doubt they care if you do these things if you can avoid disease/dying etc.

This is more culture than religion. Like the other comment, another Muslim majority culture is totally fine with dogs. It's just that here it became culturally taboo for various reasons.