Typically term life insurance is going to be a better fit for you. Term life costs less, and you can take the premium difference and invest it yourself.
Pet insurance usually is very limited in coverage and very costly.
Insurance on outstanding credit card balances
This type of insurance can be costly, and there are a lot of loopholes to go through before any benefit is paid.
Extended warranty plans
These are never a good idea. The warranty premiums are mostly commissions paid to the salesperson. Some credit card companies offer this protection if you make the purchase with their cards.
Collision insurance on older vehicles
If your vehicle has little or no value, it is better to pocket the premium and place it into a fund for future losses.