Do animals with poison have to renew their poison like snakes their skin?

Question: Do animals with poison have to renew their poison like snakes their skin?
- Keywords:
  poison
Asked by Adri to Carrie, Rupert on 17 Mar 2017.
- Carrie Ijichi answered on 17 Mar 2017:
  
  That’s a really interesting question – I assume they have to make the poison and it could run low if they had used a lot recently. I don’t think they have to shed their store and create more though but I’m not an expert on poisonous animals!

Question: Do animals with poison have to renew their poison like snakes their skin?