The animal market can be mucky, so wear shoes that can be easily cleaned.
Both the animal market and the Grand Bazaar can be quite busy, so keep your kids close and away from the traffic.
The animal market only happens on Sunday, and the Grand Bazaar is at it's best on Sunday, so this is by far the best day to visit.
It gets cold in this part of the world in the winter; try to visit between April and October.
You can take a cab to the animal market, but the bus is easy and much cheaper. If you choose to take the bus, be prepared for a hot, crammed ride. Just remember, it's part of the experience.