A Shetland pony and her foal will be among animals at Sunday’s event at St Cenydd's Church, Llangennith, South Wales.
But the Reverend Mr Austin said that his beloved pet Boots had been kicked out because she is notorious for biting other creatures.
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He said: “It was my idea a few months ago to set up the pet service so that we could involve lots of local people with the animals in the church's activities, and maybe encourage them to come along to our Sunday morning service.
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I'd love to take Boots along but I'm afraid that members of the congregation have told me I can't
“I'd love to take Boots along but I'm afraid that members of the congregation have told me I can't.
“She's rather aggressive and she doesn't mix very well with other dogs. She doesn't like cats or rabbits either.
“I adopted her seven years ago after she was found wandering around near Cardiff City Stadium.
“When I adopted her, they told me three families had already sent her back to the home, but I like a challenge.”