"Little Luck" and "The Days We Walked Together".

1. Tian Fuzhen, the singer of the song "Little Lucky", has a brisk rhythm and positive lyrics, which is suitable for expressing the mood of having fun at the zoo.

2. The song "The Days We Walked Together" is a Cantonese song sung by Andy Lau. It is written by Xiao Mei, composed by Hu Weili, and arranged by Du Zizi. It is a classic old song with beautiful melody and lyrics. Warm and suitable for taking TikTok photos at the zoo with friends or family to record the good times.