Why was an over 9 year old thread necro-ed up here??
I suspect that its a spambot.
it snuck a hyperlink to a suspicious (to me) url into the response it posted, along with some rather dubious grammar that looks bot-ish to me. the fact that its the users first post is also a giveaway.
looking at the whois listing for that domain, it's based in India so I'm pretty sure it's not a valid Petco site.
somebody may want to moderate that post.
(I'm certainly not clicking that link lol )