Hollywood Homely: It's implied the cockroaches are considered hideous In-Universe.
This later influenced the SuperMarioLogan episode "Locked Out", in which Jeffy locks Mario out of the house.
Hilarious in Hindsight: "Locked Outside" has the cockroaches locking Oggy outside the house.
Three of those four were (in order of acquisition) - Disney Channel, Cartoon Network, and Nickelodeon.
In the Philippines, it aired across four networks simultaneously.
A reboot of the series, subtitled Next Gen, has Oggy take care of a seven-year old Indian girl as a nod to the series' Indian fanbase. Also, popular Indian cartoon takes a lot of inspiration from it.
The show is so popular in India, that it's referenced this in the season 4 episode "From Mumbai With Love".
Based off the wiki, it seems to have a faithful English speaking following too, probably because of it being available on Netflix.
However the rampant Adored by the Network situation ended up causing a bit of backlash, especially in Malaysia. It also appears to have a rather large following in parts of southeast Asia (notably Indonesia, Malaysia, and the Philippines). It aired in contemporary with France and is currently being re-broadcasted.
The show is particularly well-remembered in Italy.
But, when we see the outside, all of the houses in the neighborhood (except Oggy's) are gone and there's only a snow wasteland.
Fridge Logic: In one episode, the entire world gets frozen because of a fridge.
Who ordered that box and why do they want it? That is, assuming they aren't an arachnologist.
Fridge Horror: One episode has Oggy and Jack delivering a small box which apparently contains innumerable spiders.
Foe Yay Shipping: There are some fans who ship Oggy and Joey prolly because, despite usually being enemies, they can get along well when they want to.
Is it good for Oggy considering the absolute hell he went through, not really a big deal, or do the roaches deserve to win more than they had?
Oggy's frequent victories in the fifth season against the cockroaches.
Or just not bother rooting for any of them.
People either side with Oggy (and Jack), the cockroaches, or go for both.
Others, however, think that the writers have run out of ideas for new episodes and decided that simply remastering the old episodes is good enough note despite that the fifth and sixth seasons were released simultaneously. Some fans love watching the classic episodes being remastered (also either for the opinion that they thought the classic episodes were bad in some way). He gets over all this fairly quickly, though. He learns he ate some of his beloved pet snails, that all of them died, and saw all their empty shells.
Angst? What Angst?: Possibly intentional but in "Oggy Goes Snailing", Oggy experiences this.