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Nik C.

5.0 out of 5 stars
5 repeat clients
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Nik C.

5.0 out of 5 stars
5 repeat clients

Contact for Drop-In Visits

from $15 per visit

Highlights

Nik has Star Sitter status!
Basic background check
10 years of experience
Can administer medication
Special needs experience
Senior dog experience

Pet care experience

Nik Castello Your pet’s next pal!

Ark Pet Care by Nik Castello I have 8+ years of pet care experience, including dog body language training! I’ve cared for rats, to birds, dogs, cats, and even some donkeys! I have experience with seniors, special needs, and puppies as well!

Cat care experience

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Looking to make more kitty friends!

Nik also cares for cats. Learn about their cat-specific care experience.

Qualifications

5 repeat pet parents
100% response rate
Usually responds in under half an hour
100% bookings with photo updates
Sends updates with Rover Cards
10 years of experience
Oral medication administration
Senior dog experience

Pets

Safety, trust & environment

I have a very calm aura so I usually let the animals come to me first. Depending on if your pet has accepted me into their home, they will receive all the love and possible kisses. I usually ask for a list of duties you’d like me to complete and fit that into my routine visit, such as walks, feeding, play, etc. I do not stay overnight in homes but I can visit your home three times a day.

Ratings and reviews

5.0
stars
20 ratings
Zach H.
5.0 out of 5 stars
Drop-In Visits • Apr 26, 2026

Nik was a fantastic sitter! Great communication and high attention to detail. Would highly recommend for any type of animal sitting needs!

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Jeni E.
5.0 out of 5 stars
Drop-In Visits • Apr 12, 2026

Inanna was so well cared for during our time away! Nik was attentive and reliable, keeping up with the litter, feedings, and everything in between. It was clear Inanna felt comfortable and at ease. I’d definitely book with Nik again!

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Addison S.
5.0 out of 5 stars
Drop-In Visits • Feb 22, 2026

Nik was great with our 2 dogs and 2 cats! He was attentive and went above and beyond what was needed. He sent us updates and pictures every visit which we appreciated!

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Shannon M.
5.0 out of 5 stars
Drop-In Visits • Jan 19, 2026

Nik was wonderful!! From the moment we met him we felt comfortable leaving our pets in his care! Our dog that is usually scared of all new humans bonded right away with him! He was punctual and kept us informed each day with text and pictures:) we highly recommend him and will book with him again in the future!! 🐾😊

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Sheila R.
5.0 out of 5 stars
House Sitting • Dec 09, 2025

Excellent service, Niki seemed to really like him and he played with her every time he was here. Would definitely recommend him to take care of your dogs, cats or other animals. Very reliable and responsible for care will use in the future.

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Amelia L.
5.0 out of 5 stars
Drop-In Visits • Dec 05, 2025

Nik just finished up another awesome, last minute request for us and Ms. Yogurt! Awesome job!!

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Calendar and availability

Available
Not available
SMTWTFS
Available
Not available
SMTWTFS
SMTWTFS

Schedule

Pet care fits into my life like a puzzle piece, I never stop caring for my babies and I aspire to get my pet care business off the ground.

Cats
0 to 15 lbs
16 to 40 lbs
41 to 100 lbs
over 101 lbs
Nik can host up to 3 drop-ins per day
Please let me know if your fur babies have any special requirements or if I need to make special accommodations to care for them, via message before said visit or a note left behind in your home.
Each sitter joining Rover needs to pass a background check. And by booking on Rover, you can get photo & message updates, 24/7 support, and reimbursement for eligible vet care.