This. Bring up the point that T really are very low maintenance safe animal. Tell them you won't be bringing it out of the enclosure, that's it's like fish in that part.I like several of these answers. What I wouldn't do is get one without asking first. If you live in their house, I wouldn't make waves.
You could do one of those venn diagrams. I'll start you off with some examples:
- Can be locked up
- Rarely need more than spot cleaning
- Feed once a week
- Small Footprint
- Keep a water dish full
Now compared to a hamster
- Mild venom
- They need food
- They can bite
- Good snack sized animal in case you're REALLY hungry
- Can be cute
Recap: tarantulas are very low maintenance, easy to take care of, take up little room, cost little after the startup, and (if taken care of properly) rarely escape.
- Need fresh bedding regularly
- Poop all over
- Clean cage twice weekly
- They stink!
- Bedding and food is expensive
- They stay up all night on those dang wheels
- They bite (note the "can" missing here)
As a side note to you, you're not going to be able to get just one.
My mom was fine with snakes & lizards when I lived there. She hates spiders though, so I waited until I was older with my own house.If she still seems uneasy, just tell her you could just get a 5 foot snake. Should make the little spider look like an alright option.