You should always take care of your pet's health.
Pascal's dog is sick and it will cost him $50 to cure it but that's his whole month's allowance.
Pascal wants to make a decison.
Pascal decides to treat the dog right away and buys the medicine.
Pascal decides his dog will probably get better on it's own and spends the $50 on himself.
The dog makes a full recovery and Pascal is happy.
A month later the vet tells Pascal the disease progressed and it will now cost $700 to cure; the dog dies before Pascal can raise the money.