iHerp lets you track feeding (you can note refusals, and specify what prey items and how many), sheds, your cleaning routine, defecations, urates, regurgitations, breeding, laying, hatching, escapes, meds, vet visits, loans, weight, length, and there's a comments option where you can make notes that don't fit under a particular category. For example, I noted on the tracking for all my snakes the date that I moved them into the rack, what they had been in previously and what I moved them into. There's also a lineage database that I don't quite understand because I'm a noob but I'm sure there are plenty of people with large breeding collections who find it useful to avoid accidental inbreeding.