I log weights, dates fed and what the food item was,shed dates, elimination dates (poohs only, not pees)and when I do a complete tub cleaning. I only have 26 ball pythons and 6 corn snakes, though. It really helps me with knowing when to expect a shed coming, especially since I do handle my snakes and I have a few that get really pissy when they are just going into the cycle. It also helps me know if one may be getting constipated and, not so much remembering the food item, but how long it has been since they have eaten, especially for the picky guys.
I think that this highly varies for every hobbyist/breeder. I can say that I have greatly appreciated opening my shipping box with a new purchase and found the records with the snake. Of those that I have purchased, not one logged eliminations- I think that may be a little OCD on my part. Mostly sheds, weights and feeding dates.
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Cheers,
Jessica
10.15 Ball Pythons
3.3 Corn Snakes
0.0.1 Green Tree Python
2.2 Jungle Carpet Pythons
0.0.1 Boa Constrictor
3.0 Crazy Dogs
2.0 Cats
Some Tropical Fish
...........and growing!