Consider using x-ray guidance to ensure you're in the right place, especially if you, personally, don't often block that joint eg a pastern.

Things will go wrong, and it sometimes it will be your fault.  Remember the adage - its not whether you get knocked down, its whether you get back up again.

• Mules are a cross between a donkey stallion and a horse mare.

Although mules are non-fertile, castration of stallions is still advisable to limit undesirable behaviour.

Fearful mules initially show subtle behavioural signs of fear like the donkey, then rapidly switch between the flight responses of the horse and the fight responses of the donkey.

When the subtle signs of fear are missed, stressed mules can appear explosive and aggressive and can pose a high risk to the handler.

Mules tend to exhibit pain behaviour more readily than the donkey and so may show more obvious signs of colic.

If a mule has not had any formal training, is stressed or has previously shown any dangerous behaviour, early sedation should be considered for veterinary procedures prior to catecholamine release.

Use of oral or intramuscular sedation may be more appropriate in a mule than trying to gain intravenous access.

Doses of sedation may need to be significantly increased in stressed/fearful mules due to circulating catecholamines.