We offer dog walks throughout the day and evening.


We offer daily cat sitting visits on weekdays and weekends.

Farm Animals?

We offer services on an as need service!


We offer daily pet sitting visits on weekdays and weekends.

Welcome To My Pet Business

Here at A 1 Critter Sitters and Training we strive for quality and professional, personal pet care.

Growing up we have had, in our lives, horses and cows (at college), rabbits, cats, degus parrots, dogs and numerous pocket pets. 

Theresa Cahill

Hi! I'm Theresa! I am dedicated dog walker, professional pet sitter, and certified dog trainer! I live in Calverton and am an avid pet lover. I am Pet First Aid and CPR certified! While you are here, check out the rest of the site!! We welcome the chance to talk with you and learn about you and your fur-family!



All of our pet carer-givers are fully qualified and insured to take care of your pet. You can have peace of mind knowing that your dog is happy and enjoying their walk!

Theresa Cahill

Founder and Trainer

I am continuously learning new pet care ideas, whether from books or pet parents. 

I am a perpetual student!

Dog Walker

Position available

We are looking to expand  and grow our team!

Are you or someone you know interested?

Theresa and company

Pet Sitter

We can not do this alone! So why not join our pet care team? We would love to have you!

Position available

Cat Expert

This position is wide open.  Please feel free to send me your references.

Book Your Free Meet And Greet


We are open:
Monday – Friday: 7:00 am – 9:00 pm
Weekends: 08:00 am – 9:00 pm

Ask Me A Question

Our Service Area

Our pet care service covers a wide area of a town. Some of the places we cover are Riverhead, Mattiuck, Hampton Bays and places in between. If you are unsure whether we cover your area, just send us a quick message.

If you live outside the area we cover, we still may be able to help!

What Our Clients Are Saying About Us

Get In Touch

Please feel free to contact us with your questions and comments.

We read all our mail at the end of our day.