Prophets SAW'S prayers.

Arrival of a bride or a new animal
Recite:
اللَّهُمَّ إِنِّي أَسْأَلُكَ خَيْرَهَا وَخَيْرَ مَا جَبَلْتَهَا عَلَيْهِ وَأَعُوذُ بِكَ مِنْ شَرِّهَا وَشَّرَّ مَا جَبَلْتَهَا عَلَيْهِ
"O Allah, I seek the good in it from You and the goodness in the habit and character in it/her and seek refuge in You from its/her evil habits and character".
Note: Recite the above dua whilst holding the forehead of the bride for Barakaat (blessings) and if buying a camel, recite while holding its hump. (Mishkat from Abu Dawood and Ibn Maja)